Cecilia
Last updated 2026-08-24
Cecilia is an NPC who was first mentioned during the Angels and Delusions of Muse Event, and first appeared during the Season 2 Interlude: Encore for an Old Dream.
Profile
Cecilia is the manager of the Angels of Delusion and 404 Error Livehouse. Once a famous singer now retired, she currently works as a vocal coach for the Angels of Delusion.
History
Cecilia was a famous singer and song-writer who worked under the name "Cersea", but she suffered from PTSD following the Fall of the Old Capital, which made her unable to sing despite the numerous songs she wrote at the time. Her agency forced her to continue her work, as her singing could help alleviate the hopelessness felt by the people following the catastrophe. They found a voice double for her, the Intelligent Construct Aria, who had been awoken from her slumber in a Hollow due to hearing Cecilia's music, and they began working together. Aria stood in as Cecilia's voice for her last few shows before she retired from performing, but she felt terrible about the situation, and believed that Aria should be able to succeed on her own, without being stuck in her shadow.[3]
As time went on, Cecilia recieved treatment for her PTSD, Aria's singing helped her recover. She also became friends with Astra Yao at some point.[4] Her appearance and voice changed, and she eventually came to meet the Angels of Delusion, which Aria was part of. She signed on to be their vocal coach, though due to her lingering guilt over having Aria work as her voice double, she withheld her former identity as Cersea from the group. She also came to take over 404 Error, offering invitations to various groups such as Satellite, The Forecasters, The Darkforge and The Deepsea Aliens.[3]
In the lead up to the Gilded Carrot Day that followed after Ye Shunguang was awarded the title of Void Hunter, rumors circulated that Cersea would come out of retirement, but Cecilia had no intentions of returning, with Vesper - a singer from TOPS Entertainment, taking the role of lead performer instead.[4] The intelligent entity Youkai began causing problems throughout New Eridu by hijacking construct citizens, and it was during this time that the truth about Cecilia's identity was revealed, causing Aria, who was already under emotional duress and suffering from Youkai's influence, to spiral and was hijacked in turn.[5]
After she recovered, the master-student-pair came clean to one another, reconciling before continuing their preparations for their Gilded Carrot Day performance.[verification needed] However, Youkai had managed to coerce Vesper, hoping to use her to disrupt the celebrations. After Aria overcame Vesper in a co-op encounter, she was taken away by Krampus, leaving the staff for the ceremony desperate for someone to take over, and returning to Cecilia. She proposed to the Angels for them to join her on stage, but they refused, not wanting to compromise their debut performance at the 404 Livehouse.[5] Expressing her pride in them, the angels returned to Sixth Street, while Cecilia took the stage to perform at Failume Heights, singing the same song as the angels as they welcomed the new year.[6]
Dialogue
- (After completing Dawn-Sent Whisper - 6AM)
- (Idle)
- Cecilia: It's just one performance...
- (Talk to Cecilia)
- Cecilia: Want to hear me sing? Right here, right now...
I've always been your audience.- Cecilia: Or perhaps I should say... being able to keep singing for all of you is the greatest blessing a singer could ever have.
- With your eyes closed, her song feels like a gentle tide, washing over every shore so that no soul is ever left stranded in loneliness again.
- Gonna Listen to That a Million More Times! Achievement Complete
- (Idle while Cecilia is performing)
- Staff Member 1: That's the kind of legacy a real old capital diva carries!
- Staff Member 2: Listening to music is part of the job too...
- Staff Member 3: Her voice is still as moving as ever!
- Staff Member 4: The audience is in for a treat...
- (When Satellite is performing - 12AM)
- (Idle)
- Cecilia: How long has it been...
- (Talk to Cecilia)
- Cecilia: You're here. Are you interested in Satellite too?
They're a pretty rare kind of group, after all.
It's hard not to be curious.- Cecilia: Yeah. Very few live houses support Bangboo groups, and Satellite only started its residency here not long ago.
- Cecilia: I once stumbled on one of their street shows — music bursting with color, dance like streams of light — yet they still couldn't get the rushing crowd to stay.
- Cecilia: A real shame, isn't it? As it happened, 404 had just reopened for business, and we still had slots for bands and idol groups, so I extended them an invitation on the spot.
- Cecilia: To this day, Satellite is still a niche group... They may not have a massive fanbase, but they've definitely left a mark on a certain crowd.
- (Idle - 12PM)
- Cecilia: How've you been feeling lately...
- (Talk to Cecilia)
- Cecilia: How's it feel working as a tuner here, Hayden? Settling in okay?
- Hayden: Yeah... I've settled in pretty well. To be honest, it's much better than I expected.
- Hayden: I used to really dislike the atmosphere around girl bands... If you hadn't invited me, I never would've come work at a place that's full of them.
- Hayden: But now, I really understand why girl bands are so popular...
- Cecilia: ...?
- Hayden: Especially Angels of Delusion! They're the most vibrant group, and the dynamics between the members are full of drama... Oh, and they're your students, right?
- Hayden: You're quite the teacher. I've already become a die‑hard fan of Angels of Delusion!
- Cecilia: I never thought this would be your kind of music...
- Hayden: Yeah, how did I never realize it before?
- (Idle - 6PM)
- Lo: Ms. Cecilia is my absolute favorite!
- (Talk to Lo)
- Lo: I want to be as mature and charming as you, Miss Cecilia!
- Cecilia: I'm probably much more fragile and immature than you think. You can set your sights much higher than just becoming like me.
- Lo: No way! Even Angels of Delusion rely on you so much, Miss Cecilia, don't they?
- Cecilia: They've always relied on their own effort, not on me.
- Lo: But without you, Miss Cecilia, they wouldn't have been able to keep going, would they?
- Cecilia: ...I don't know, but I trust them.
- Cecilia: Lo, maybe you're more cut out for the spotlight than you think.
- Cecilia: Who knows? Maybe one day I'll be the one counting on you, Lo.
- Lo: Huh? M—Me?!
- (Idle - 12PM)
- Cecilia: This melody here... yeah, it's fine!
- (Talk to Cecilia)
- Sunna: Ms. Cecilia, could you please take a look at the score for our new song?
- Cecilia: Okay, let me see... Clever blend of modal shifts and variations, really brings out the song's sense of development... and that backbeat syncopation going into the chorus is a very daring experiment...
- Cecilia: You've even sketched out some initial arrangement ideas here, which shows you were thinking about the arrangement while composing — definitely a step forward. Your style is very distinctive, and there's no way this song will be boring.
- Cecilia: Well... overall, this new song is very good. I like it.
- Aria: Yay! I'm already looking forward to recording the new song!
- Nangong Yu: What a relief... No more listening to Sunna's latest demo uploads late at night every single day!
- Nangong Yu: Every time there are only one or two tiny changes from the last version, I honestly thought you were sending them just so we could play "spot the difference"!
- Sunna: I was just logging my daily tweaks, never thought you'd actually tune in every day. Nangong... I'm legit touched...
- Aria: Aw, look at that... Sunna and Nangong have always been close, huh?
- Nangong Yu: You... shut up! Don't say another word...
- Cecilia: Heh, guess that's just part of the whole young lady group package...
- (Idle)
- Sunna: Why does my voice keep cracking when I sing...
- (Talk to Sunna)
- Sunna: It's so strange... I can usually nail that high note just fine. Why do I keep cracking on it today?
- Aria: Your throat okay? Did you catch a cold or something? Need some water?
- Nangong Yu: Your voice sounds just fine... so where exactly is the problem?
- Cecilia: Hmm... I don't think that's it...
- Cecilia leans down and gives Sunna's belly a gentle rub.
- Cecilia: ...Sunna, did you seriously overdo it at lunch again?
- Sunna: ...Huh?!
- Nangong Yu: Lemme feel too... Oh! That's fried chicken here, ice cream over here, and some cupcakes... Yup, definitely ate a lot.
- Sunna: How'd you even figure that out...?
- Nangong Yu: Case closed. Turns out Sunna ate way too much, so there's no room in her belly for the breath she needs to sing~
- Sunna: ...Wah, meow!
- Nangong Yu: What's with all the waterworks... Alright, alright, you big dummy Sunna, lemme think of something.
- Aria: Let me think of something too! Hmm... When humans eat too much, does rubbing their belly help them digest faster?
- Nangong Yu: ...Got it!
- Nangong Yu: Just pass the mic to the audience when you hit that high note, right?
- Aria: Yeah, that way you can avoid the risk of missing that high note!
- Cecilia: Look... being able to handle unexpected situations on stage is a solid skill, but we should really focus on preventing those mishaps in the first place.
- Cecilia: I'll let it slide this time, but don't expect this to become a habit, got it?
- (Idle - 12PM)
- Maki: I really wish you could be here...
- (Talk to Maki)
- Maki: Miss Cecilia, if you have some free time soon, would you come watch The Forecasters perform? It wouldn't take long, and even coming just once would mean a lot to us.
- Moe: I—If you come, I'll definitely give it everything and write a new song... s—so please, do come!
- Nana: If you don't come, Miss Cecilia, Moe might actually burst into tears~
- Cecilia: Why would you assume I've never seen you perform? As the owner of 404, I keep tabs on every group that takes the stage, and I've stopped to watch you, The Forecasters, more than a few times.
- Cecilia: Trust in your own light. It shines no less brightly than the stars in the polar night.
- Cecilia: Besides... I wonder if you remember, Miss Maki, back when you were still part of that wildly popular idol group Venus, we actually crossed paths once.
- Nana: ...
- Maki: Of course I remember! I just didn't expect you'd also... Sorry, that was rude of me...
- Cecilia: It's fine. I stepped away from the spotlight a long time ago. And Venus... I'd already heard about your breakup. I never thought we'd meet again here at 404, let alone that, when we did, we'd both be living new lives.
- Cecilia: And unlike me, you're still up on stage, leading The Forecasters. It takes real courage to start over. Give yourself more credit for that.
- Maki: So you've been following us all this time... thank you! Next time you come to see us, Miss Cecilia, please tell us beforehand, and if you could share your thoughts and suggestions after the show, that would be amazing!
- Maki: This time I'm making my dream happen no matter what, even if it's only for...
Commission and Event Appearances
Phaethon's Story Episodes
- Encore for an Old Dream
- Episode 2: Prelude to Delusion
- Episode 3: Construct Series Case
- Episode 5: Courage and Hidden Wounds
- Episode 6: She once promised...
- Episode 7: Yearlight Ceremony Emergency Plan
- Episode 8: This Night Is Gilded
City Commissions
Trust Commissions
- Aria's Trust Rank Close: Starloop Dreams
Events
- Angels of Delusion Training in Progress
- A Harmony of Delusions
- Gravitational Storytime
- Snap! Hollow Realm Showdown
- Summer Waves Roll In
- Crispy Meal Deployment Plan
Web Events
Character Mentions
Inter-Knot Posts
- (Intel) Gilded Carrot Day Lighting Ceremony Guest List Confirmed
- (Post) Is 404 on Sixth Street a performance venue for some Cersea students?
Trivia
Etymology
- Cersea's Chinese name 瑟汐 Sèxī uses 汐 xī, meaning "night tides" or "evening ebbtide," possibly referencing her aquatic traits, and "sea" in the stage name.
- The name Cecilia comes from the Ancient Roman plebeian family name Caecilia. The founder of this family, Caeculus, was born from a spark.
- In Christianity, Saint Cecilia is the patron saint of musicians, and she is also associated with songbirds; Cecilia's musical background might thus be a reference to her.
- Caecilia is also an genus of amphibians.
- Cecilia shares the same English voice actor, Allegra Clark, with:
Gallery
Comic Book Images
Videos
Official YouTube Video
Official YouTube Video
Official YouTube Video
Official YouTube Video
Other Languages
Cecilia
| Language | Official Name |
|---|---|
| English | Cecilia |
| Chinese (Simplified) | 塞西莉亚 Sàixīlìyà |
| Chinese (Traditional) | 塞西莉亞 Sàixīlìyà |
| Japanese | セシリア Seshiria |
| Korean | 세실리아 Sesillia |
| Spanish | Cecilia |
| French | Cécilia |
| Russian | Сесилия Sesiliya |
| Thai | Cecilia |
| Vietnamese | Cecilia |
| German | Cecilia |
| Indonesian | Cecilia |
| Portuguese | Cecília |
Cersea
| Language | Official Name |
|---|---|
| English | Cersea |
| Chinese (Simplified) | 瑟汐 Sèxī |
| Chinese (Traditional) | 瑟汐 Sèxì |
| Japanese | セルシー Serushī |
| Korean | 세시 Sesi |
| Spanish | Cersea |
| French | Cersea |
| Russian | Цирцея Tsirtseya |
| Thai | Cersea |
| Vietnamese | Cersea |
| German | Cersea |
| Indonesian | Cersea |
| Portuguese | Cersea |
Change History
- Cecilia was released as an open-world NPC.
- Cecilia was mentioned in the Angels and Delusions of Muse event, and Cersea was shown in the Inter-Knot Post (Intel) Gilded Carrot Day Lighting Ceremony Guest List Confirmed.
References
- ↑ Twitter (X): EN VA Self Announcement
- ↑ Instagram: KR VA Self Announcement
- ↑ 3.0 3.1 Phaethon's Story, Encore for an Old Dream, Episode 6: She once promised...
- ↑ 4.0 4.1 Phaethon's Story, Encore for an Old Dream, Episode 3: Construct Series Case
- ↑ 5.0 5.1 Phaethon's Story, Encore for an Old Dream, Episode 7: Yearlight Ceremony Emergency Plan
- ↑ Phaethon's Story, Encore for an Old Dream, Episode 8: This Night Is Gilded









