<span class="mw-page-title-main">星期日</span>

Early stage
Sunday in Head of Family Attire (Version 1.6-2.3) Robin and Sunday lost their parents at a young age and encounteredthe Cancer of All Worlds.（the Stellaron）They were later adopted by Gopher Wood, a member of the Penacony Family. The siblings shared a deep bond; Sunday unconditionally supported Robin's dream of performing, and they promised each other from a young age to build the paradise of their dreams. When Robin and Sunday were young, they encountered an abandoned Charmony Dove. Sunday insisted on building a cage for it, intending to release it once it could fly. Robin agreed, and they eventually witnessed the Charmony Dove take to the sky together. Only Sunday knew that the bird eventually fell and died in front of Robin's window. While Sunday was still studying under Gopher Wood, he was once ordered by him to temporarily manage Aiden Park. Unable to tolerate the disorder within the park, he established many strict and even bizarre rules. Any violation of these rules would be forcibly corrected by the power of "Order," resulting in a complete mess. Later, Sunday served as the "Bellbearer" of the Oak Family, listening to the confusion and bewilderment of the dreamscape residents and providing them with guidance. It was during this time that Sunday heard voices from all corners of the dreamscape and came to understand the complexity of human nature. Witnessing the suffering of the weak and the arrogance of the strong, he began to doubt the Harmony's philosophy of "the strong helping the weak" and started to embrace the Order's value of "the strong ruling the weak." After Gopher Wood became the Dreammaster of Penacony, Sunday became the head of the Oak Family, while Robin had gone to the Epsilon system to become a famous singer. One day, Sunday received a letter from Robin via Gopher Wood, learning that she had been wounded by a stray bullet in the neck while trying to spread the "Harmony" through her songs to save lives on a planet. This left Sunday furious and led him to further doubt the limitations of the "Harmony." In the Version 1.6 Special Program, he was invited to participate in theOwlbert-hosted Penacony Charmony Festival broadcast, where the guest information was revealed.

Version 2.1 "Into the Yawning Chasm"
Trailblaze Mission "Cat Among Pigeons" The Oak Family commissioned the Astral Express to help them investigate the murders in the dream. The Dreammaster and the heads of the other Families have been pressuring Sunday, demanding that he abandon the investigation and focus on organizing the Charmony Festival. Dr. Ratio went to the Dewlight Pavilion to meet Sunday. Sunday invited Dr. Ratio to cooperate in exchange for research knowledge on the Stellaron. Dr. Ratio then revealed to Sunday that what was actually stored in Aventurine's case wasTopazthe Cornerstones, while his true Cornerstone was mixed in with the gifts. Sunday asked Dr. Ratio to invite Aventurine over. After Aventurine arrived, Sunday used the Baptism of "Harmony" on him and questioned him, exposing Aventurine's lies. Sunday stated that Aventurine, having received the Baptism, had only seventeen system hours of life left. As long as Aventurine helped Sunday find the mastermind, he would lift the Baptism and allow Aventurine to join the Family; otherwise, he would suffer the "Dominicus（incarnation of "Harmony"）"'s wrath. Subsequently, Sunday returned the gifts to Aventurine, telling him to use the money to gather information in the Golden Hour. However, all of this was still within Aventurine's plan; what Sunday had confiscated were actually Topaz's and Jade's Cornerstones, while Aventurine's own Cornerstone had been shattered by himself and taken away mixed in with the gifts. When Welt and Acheron entered the Dewlight Pavilion to investigate, Sunday appeared and warned them to be wary of Aventurine. Sunday monitored everything happening outside through his spies (the omnipresent Nightwisp Nightingales), including Aventurine's self-sacrifice. GallagherGallagher went alone to the Dewlight Pavilion to see Sunday. Sunday revealed that although he had been deceived by Aventurine, he had known what Aventurine intended to do from the moment he left the pavilion, yet he still allowed Aventurine to proceed and even specifically cleared out the Clockie Studios Theme Park for Aventurine's performance. He stated that his true purpose was to draw out Gallagher. Sunday believed that Gallagher was connected to "Something Unto Death" and the true culprit of the murders, and exposed him as a Pathstrider of "Enigmata." Dropping his usual calm demeanor, he angrily questioned why he killed his sister. Gallagher expressed willingness to give him the answers he sought. However, at that moment, Sunday's shadow quietly took the shape of "Something Unto Death," and the blade of "Death" pierced through Sunday's chest.

Version 2.3 "Farewell, Penacony"
Trailblaze Mission "Farewell, Penacony" According to the terms of the previous deal with Robin,Jade[Jade] extracted Sunday, who was imprisoned by the Family and awaiting trial, telling him that his and Robin's idea of building a paradise still had a chance to be realized. She then released him, letting him break his own wings and walk upon the earth to see the true face of the world. See also:Honkai: Star Rail/Relics#Sacerdos' Relived Ordeal

Version 3.0 "The Re-Genesis Anthem"
Trailblaze Mission: "Heroic Saga of the Fallen Leaves and the Chasing Fire" (To be added)

Concert for Two (4-Star · Preservation)
"Brother, this is..." "It's been a long time since you've sung happily... I've built a stage for you, though... it's a bit simple." "But the teacher thinks I'm not suited for it..." "No, I think it sounds wonderful! One day, you will definitely achieve your dream and sing on a much larger stage..." …… Many years later, as she stood on a dazzling stage and looked out at the surging crowd of fans, she lost herself in thought for a moment— On the long road of chasing her dreams, she would always remember that look of trust and her very first "concert." There were no brilliant lights, no glamorous makeup or costumes; there was only a stage built by one child to encourage another to pursue their dreams. "Now, our dreams have come true. But... is it still 'our' dream...?" She gripped the microphone tightly. Before the next song began, she didn't even have time to feel sad.

After the Charmony Fall Silence (4-Star Erudition)
The eternal dream he wished for vanished in an instant. As he fell toward the earth, he was not sad, but merely wanted to close his eyes. The old path he trod upon was already shattered, and the road ahead remained shrouded in mist. "After waking up, the world continues to undergo cycles of pain, with no escape, just as it always was..." Carrying the past on his shoulders and turning his back on his homeland, he continued to trudge toward that paradise which did not yet exist. So, why do people sleep? Why do people wake up? —As planet after planet streaked past the window, this answer now needed to be given a new meaning. "Perhaps—perhaps I can still..."

Grounding Flight (5-Star · Harmony)
The vain delusions have already shattered; he wished to be the sun for all things, yet he fell from the sky. "Do you feel what pain is?" So said another voice within his heart. "That is exactly what I should feel." He fell into the dust, answering with heavy footsteps. He walked upon the earth, seeing once again the suffering that permeates the world, like an unending spring. He crossed the thorns in his path, he heard the cries of mortals, he endured anguish, and he attained tranquility. "Falling is but another name for flying." On this eighth day, he granted himself "Departure."

Attribute Name	Level 1 Stats	Max Level (80) Stats
HP	168	1241
ATK	87	640
Defense	72	533
Speed	96
Critical Rate	5.0%
Critical Damage	50.0%
Max Energy	130

Name	Genre	Traits	Description
Flickering Admonition	Basic Attack	Single Target	Deals Imaginary DMG equal to Sunday's50%to a single enemy.
Grace of Paper and Rites	Combat Skill	Support	Enables a single target ally and their summon to take action immediately, and increases their DMG dealt by15%, and if the target has a summon, the DMG dealt is further increased by25%, lasting for 2 turn(s). After using Skill on "The Beatified," recovers 1 Skill Point. When Sunday uses this Skill on a character following the Path of Harmony, the immediate action effect cannot be triggered.
Ode to Light and Scars	Ultimate	Support	Regenerates Energy for a single target ally equal to 20.0% of their Max Energy, and makes the target and their summon become "The Beatified." "The Beatified" has their CRIT DMG increased by an amount equal to Sunday's12%CRIT DMG +8%。 At the start of Sunday's every turn, the duration of "The Beatified" reduces by 1, lasting for 3 turn(s). This effect only applies to the latest target of Sunday's Ultimate (excluding Sunday himself). When Sunday is knocked down, "The Beatified" will also be dispelled.
The Flesh in Confession	Talent	Support	When using Skill, increases the target's CRIT Rate by10%。
Mystery of Glory	Technique	Support	After using the Technique, the next time Sunday uses his Skill on an ally in the next battle, the target's DMG dealt increases by50%for 2 turn(s).

Bonus Ability	Unlock Conditions	Effect
Sunday's Longing	Character Ascension 2	When using Ultimate, if the Energy regenerated for the target is less than 40, the Energy regenerated is increased to 40.
Sublime Dusting	Character Ascension 4	At the start of the battle, Sunday regenerates 25 Energy.
Harbor in the Palm	Character Ascension 6	When using Skill, removes 1 debuff from the target.

Name	Description
Millennium's End of Silence	When Sunday uses his Skill, the target character's DMG ignores 16% of the target's DEF, and summons' DMG ignores 40% of the target's DEF, lasting for 2 turn(s).
Faith Fills the Frailty	After using the Ultimate for the first time, recovers 2 Skill Point(s). DMG dealt by "The Blessed" increases by 30%.
Thorned Hermitage	Ultimate Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
Sculpture's Preamble	At the start of the turn, regenerates 8 Energy.
Paper Boat Drifting in Silver Bay	Skill Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
Commencement of Cacophony	The CRIT Rate boost from the Talent can stack up to 3 times, and increases the duration of the Talent by 1 turn. When Sunday uses his Ultimate, he can also apply the Talent's CRIT Rate boost to the target. When the Talent's CRIT Rate boost is active, for every 1% of the target's CRIT Rate that exceeds 100%, their CRIT DMG increases by 2%.

Character Details
The sweet dream of "Order" has dissipated, but there are still those who will not abandon their original aspirations. —A traveler with broken wings fallen to the earth, where will his footsteps lead?
Character Story: I (Unlocked at Character Level 20)
"Dear Sister: I've eaten all the desserts you left for me! It's all because the pudding tarts were so delicious, I couldn't help but eat three before music class! Unfortunately,~~the old witch—~~the loud-voiced teacher said my throat was cloyed and I sounded like a duckling when I sang, so she made me stand outside as punishment—and guess what? Hehe, I ate the fourth one outside the classroom! Luckily, my piano practice is going well, and the big-guy teacher praises my talent every time. Now, as long as I hear a melody once, I can play it back exactly as it was. I'm just as amazing as you, right! When you come back next time, we can play a piano duet, and I can accompany you. We can hold another concert! Don't worry about our little bird; it can already fly a bit higher than yesterday. The weather has been nice lately, so it should be able to fly away soon! When I went to clean Mother's grave this afternoon, I saw several birds that looked exactly like it. Our little bird will join them soon! Time flies so fast. I've recently started taking the Family's lessons with the "Chime" at the church. This means—I will definitely become someone very, very incredible in the future! At that time, together, we will surely turn the Dreamscape into a very, very wonderful place! I'm sending some new flavors of SoulGlad with this letter. Some of them taste a bit strange, but they're fun, so I still wanted you to try them. If you want more, I'll send some over! (If you see any delicious pudding tarts, send some to me too!) Don't work too hard! Always supporting you! Your Brother" —An old family letter, kept in a hidden compartment of a suitcase
Character Story: II (Unlocked at Character Level 40)
"Dear Sister: I have received the records you sent; I played along with a few of them, and they are wonderful. Currently, the record stores in Penacony are overcrowded, and posters for your new album are everywhere on the streets. Many people often praise you to me and ask if they can get your autograph. It's just as well that you aren't returning lately. The Penacony of today is different from the past; Dreamseekers are flocking in, and the economy is booming like a geyser, but the Dreamscape is also much more chaotic than before. In the past, I never imagined that the "Harmonious Chime" would face such daunting challenges. To monopolize industries, entrepreneurs have established extremely unreasonable working hours. Workers in the Dreamscape often have to work twelve consecutive system hours before they can rest, yet they only receive a meager wage. Speculative and high-risk industries are everywhere in Penacony. Dreamseekers come here for bubble-like wishes, only to end up as one of the vagrants... Previously, a stowaway sought my help, saying he had exhausted everything just to stay in Penacony, only to be discovered by the Bloodhound Family. He promised me he would definitely pay off all his debts in the future, which is why I petitioned the Bloodhound Family to show him some leniency. However, whenever I think about how many people like him there are in Penacony, I cannot help but wonder if everyone is capable of making the right choice. Calculating the dates, you should be setting off for your next tour by the time this letter arrives. You need not worry about matters in Penacony. I know you are kind-hearted, but not everyone is like you. Be sure to protect yourself. Your eternal support, Sunday" —A yellowed family letter, placed inside a record box
Character Story: Part III (Unlocked at Character Level 60)
"Dear Sister: I have received the galactic specialties. With the Charmony Festival approaching, I am occupied with many affairs; I will savor them carefully when I have the time. Regarding the matter of a traitor within the Family, I am aware of the situation. Your suspicion was correct; this matter is indeed related to the death cases you noticed, and even more so to that mysterious "Watchmaker." However, you have been away from Penacony for a long time and are unfamiliar with the current situation; you must not act rashly. As for your loss of voice, your priority is to rest well. If you are truly unwell, I will discuss the Charmony Festival with the Dreammaster to see if special arrangements can be made. You believe your loss of voice is because Penacony's "Harmony" is not pure; I agree. Perhaps the only thing in Penacony that can be called pure is human "greed." ~~I'm sor▇▇▇▇▇▇▇▇▇▇▇~~ Since becoming the Family Head, there are many things I cannot say and many things I cannot do, but that does not mean I turn a blind eye to everything in the dream. We may all be moving forward on new paths, but the only thing I can guarantee you is that I have not failed the promise I made. Oak Family Head, Sunday Dewlight Pavilion, Moment of Dewlight Penacony (Dreamscape) Asdana Star System」 ——A recent letter home, with scrawled handwriting and many crossings-out
Character Story IV (Unlocked at Character Level 80)
"Dear Sister: It has been a long time since I last wrote. For the time being, I may be out of contact for a while, but I promise you, this will not be the last letter I send to you. A path filled with hope may merely be a path filled with temptation. Thanks to all of you, I have not strayed too far. In my current capacity, there is little I can do to make amends, other than purging the lingering echoes of Order from Penacony. In this way, the Dreamscape will no longer face the hidden danger of "Order." To catch a glimpse of the sky, even a bird with broken wings will choose to set out once more. Just like the bird we raised together when we were children—even knowing the possibility of falling, it still had to fly into the sky, for that was its destiny. I will not forget our wish to "make everyone happy," but now I must leave to find a way to realize it in the wider world. This is my fate, and my choice. Mr. Welt has agreed to let me board the Express as a passenger to search for my promised land. They are kind-hearted and of noble character, as you likely know better than I. Often, when you say nothing, I still think of you as that child who needs protection. But you have long since grown up; with you in Penacony, I am at ease. I have cleaned our mother's grave. I picked a blue flower to keep with me; she will continue to bless us as she always has. Finally, thank you for the Giant Spheroid pudding tarts. After all these years, they still have that nostalgic taste. On the road, Your Brother" ——An unsigned letter, left in some corner of the Sweet Dream

Dialogue Scenes	Dialogue
First Meeting	Every reunion is also a new encounter. Hello, I am "Sunday," a mere passenger.
Greeting	If you encounter any problems, feel free to talk to me. Listening has always been my job.
Farewell	We are all walking our own paths. Though it is lonely, as long as we keep moving forward, we will not forget each other.
About Self: Past	I once listened to the pleas of the suffering as a "Bell-Bearer," knowing that no god in this world saves people for nothing. To change anything, one can only rely on themselves.
About Self: Future	There must be a paradise that someone has to build. That vow is like the sun in the sky; perhaps I will melt and fall before I can reach it... but some suffering must be endured.
Chat: Dreams	It does not restrain people through violence, nor does it persuade them through logic; everyone can find peace here... Perhaps I was the same, unknowingly losing myself within the dream.
Chat: Theater	I prefer exquisite musical movements; that will never change. But I must also admit that chance and accidents can also form a wonderful drama, and life is the same.
Hobbies: Playing Music	Music is a language that spans the stars, and a solo is another form of speech. I know a thing or two about this.
Troubles	I departed in a hurry and couldn't prepare a well-fitting outfit. A deviation of just a few millimeters is always bothersome. Never mind, I shall try to accept this "imperfection."
Sharing: Halovians	The Halovians are often seen as children of "The Harmony," listening to people's prayers on its behalf. Whether those wishes can be fulfilled or not, they will be woven into Xipe's divine melody.
Observations	Humans are not flawless, unified individuals. On the contrary, our hearts are full of contradictions at every moment. Some choose to reconcile, while others choose to flee—no matter the choice, that is the true self.
regardingRobin	I rarely speak to Robin about my troubles; as an elder brother, I should take on more responsibility. The darkness of the adult world should not be brought back into our home.
regardingRobin• II	In our childhood, we once made a wish to "make everyone happy"... Yet before that wish could be realized, I already owed her so much... Perhaps at some point, I too became one of her troubles.
regardingAventurine	He disguised himself with a superficial exterior and delivered a grand performance. A respectable opponent; if there is another chance, I look forward to our confrontation on the next stage.
regardingDr. Ratio	Ignorance and chaos are both universal maladies. If not for our opposing positions, that professor and I would likely have gotten along well.
regardingGallagher	We were once adversaries, but his firm will and unwavering conviction deserve my highest respect.
regardingWelt	Once the flame of an ideal is lit in one's heart, it leaves an indelible mark. That man must have a past worthy of being called a "hero."
regardingHimeko	"Trailblaze" is not a solitary quest, but a path formed by the connection of generations... It is an admirable road.
regardingMarch 7th	Wisdom has always had more than one face. Contemplation is a sign of the clever, but so are wit and intuition.
About March 7th: II	Seeing Miss March able to bravely face the future with a brand-new look is truly heartening and admirable. I still have much to learn from her.
regardingDan Heng	Not everyone can walk away from their past. But after a period of confusion, one's stride will surely become firmer.
Eidolon Activation	Even if the ground is covered in thorns, one must forge ahead.
Character Ascension	Through this arduous journey, to see the stars.
Max Level	Journeys always have an end; I have no doubt about the meaning of this one.
Trace Activated	The vista after introspection is no mere dream.
Team Setup·-^[3]	May we walk upon a smooth path and finally reach the stars.
Team Setup·Robin	How long has it been since we played a piece together? I truly miss it.
Team Setup·Welt	Fighting side by side is also the duty of fellow travelers.
Team Setup·Himeko	The stars and the future will both shine ahead.
Team Setup·March 7th	Miss March, please display your ingenuity to your heart's content.
Team Setup·Dan Heng	Do not be bound by the past... we should all strive for that.
Team Setup·Aventurine	All or nothing—never betray your own creed.
Team Setup·Dr. Ratio	Learned Professor, I hope we may both find the truth.
Team Setup·Moon of the Long Night	Rest assured, you and I share a common goal.
Team Setup·Dan Heng • Tenghuang	I can feel that your steps toward the future are no longer heavy.

Battle Actions	Dialogue
Battle Start: Weakness Break	What you seek is what you shall receive.
Battle Start: Danger Warning	Finding life in the face of certain death.
Turn Begins: I	I shall cross the thorns.
Turn Begins: II	I have heard the call.
Turn Idle	A moment of inspiration, born from a long wait.
Basic Attack	Repent.
Skill 1	May suffering and confusion leave you.
Skill 2	Tranquility is within sight.
Light Hit Taken	It is nothing.
Heavy Hit Taken	Deserving of this trial.
Ultimate: Activate	With this body...
Ultimate: Unleash	To walk with you, to protect you, to lead you afar.
Downed	I have failed my promise...
Return to Battle	It is not yet time to stop.
HP Recovery	I am most grateful.
Technique	Day of rest.
Victory	The road is long; let us walk and see.
Opening Treasure I	A pleasant sound, it brings peace.
Opening Treasure II	Rewards from the journey.
Opening Precious Treasure	This "Trailblaze"... is truly novel.
Puzzle Solved I	Orderly, good.
Puzzle Solved II	"Enigmata" is always anxiety-inducing; it's best to dispel it.
Enemy target spotted	No need for doubt; seeking only requires moving forward.
Return to town	Happiness and suffering are so similar no matter where they are.

Condition	Battle Voice Lines
Dancing	Sing in chorus, the resonance of all wills! Resonance of all wills! (2x speed)
Dancing... failed to activate	Why does no one resonate?
Why are all voices silent?
The solemn	The noise falls away.
All things follow the melody.
In Dreams	Enjoy eternal peace.
Sink into the dream.
Accelerando	All people look up.
Sing together in one heart.
Light Hit Taken	Noisy!
Heavy Hit Taken	Disorderly noise!

Condition	Battle Voice Lines
Tempestuous	Arise, O Lord, in Thy wrath! Arise, O Lord! (Double speed)
Broadening	He who holds the truth shall be preserved.
He who gains wisdom shall be guarded.
Crescendo	Await the Gospel!
Pray without ceasing!

Condition	Battle Voice Lines
In the Beginning was the Word	By "Reality"...
By "Chronos"...
By "Language"...
By "Value"...
By "Rule"...
By "Meaning"...
By "Human Dignity"!
In the Beginning was the Deed	O Order, return at our call!
Awaken, O Judge of the World!
Defensive	Sacrilege!
Such blasphemy!
Downed	Tonight... the dream is short...

Introduction

Character Experience / Appearance Record

Character Information

Sunday-related

Trivia & Etymology

Plot Related

Player Discussion

Related to Septimus

Character Appellations

Light Cone Story

Phone Case

Sunday (Harmony · Imaginary)

Character Role

Character Stats

Skills

Traces

Eidolons

story

Voice Lines

"Harmonious Choir" The Great Septimus (Echo of War)

Echoes of Old Dreams (Summon)

Voice Lines

Drops

Cacophonic Conductor

Notes

External Links