The information here comes from a post made by the official account on Hoyolab on 25 September 2025.

She is Evernight, March 7th's other half, the Chrysos Heir with the Coreflame of Time in her keeping.
“She's a brilliant star, casting flawless light through the darkest of times. She's also a warm candlelight, illuminating my endlessly deep dreams.”
“If one day March 7th's memories were to be tainted… I guess I would not hesitate to burn everything to ashes with the flames of Oblivion, leaving behind not even a single trace ♭”

▉ Vol. 11 Character “Mysterious Foreign Guest” Evernight

Producer: Galactic Baseballer
Photography: Night Shot (Chimera)
Styling: Evernight

Evernight is the shroud of night that was born alongside March 7th. She is the Chrysos Heir who conceals the Coreflame of Time. Amidst the eternal night, she raises the waves of “Oblivion” to protect the wishes of those in the mirror and watch over her path ahead. At this moment, as night falls within a gentle rain, Evernight stands holding an umbrella, gazing at the distant sky…

“We meet again, Little Trailblazing Graybird~ What would you like to know this time? I can tell you everything about Evernight without holding back. But in exchange, perhaps the story of March 7th should be told by you… No, by all of you together. Tell me more… and more. ♭”

Q1: What does March 7th mean to you?
This lively, adorable, fun, and beautiful girl is an incredibly important presence in my life.

She's a brilliant star, casting flawless light through the darkest of times. She's also a warm candlelight, illuminating my endlessly deep dreams. As an obsession, a fragment of the past, I never imagined that one day I would witness the romance of the cosmos through her eyes, participate in the wonders of an interstellar journey through her memories. I'm so grateful she brought me such an amazing experience~

I often wonder: What if I could stand by her side through wind and snow, experience dream bubbles and the Planet of Festivities, practice swordplay together, buy her some Immortal's Delight… But maybe what we have right now is for the best. ♭

Q2: What is Miss Evernight's view on Oblivion?
For me, only through Oblivion can I protect what's true. Due to the Garden of Recollection's greed, I had to fight and flee through the night… That's why I chose to slumber, and consequently, March 7th forgot many things. Only by forgetting those painful memories could she truly embark on her own new journey, heading towards an unblemished future. The Trailblaze is the best proof of that, isn't it~?

Sadly, there are many who covet the Remembrance. If one day, March 7th's memories were to be tainted… I guess I would not hesitate to burn everything to ashes with the flames of Oblivion, leaving behind not even a single trace. ♭

Q3: Could you tell us what March experienced during her 97 days in Amphoreus?
There are too many stories and too little time to tell them all at once. But if you want to hear about the most memorable ones…

On Day 23, she first attempted to harness her power, creating gentle snowflakes for a child who wished for snow, though this tiny miracle belonged to that child alone. On Day 42, guided by the Remembrance, she led a lost squad oof guards safely back to Okhema, without losing a single soul despite the raging black tide. Looking back, every moment seems worth remembering. ♭ Maybe turning this into a journal would be nice~

Q4: A journal filled with blessings from the past is bound to be amazing!
Of course. However, let the journal that recorded the past retire into the evernight with me, and remain in the past. ♭ The story of the Trailblaze shall be the bold stroke on the future pages. Take flight bravely, my dear little birds. I'll always be watching over you~