Sirin and Bella's relationship is something that can be so personal to me, and I love how much they mean to each other. Sirin was just a kid who didn't understand the limits of her own power and firmly believed to have resurrected her best friend, or at least pretended like it.
i made this bot because of the lack of sirin content and honestly i would've never imagined to see her become playable someday. even if it's not my baby herself, people will still get to know and love her. (cries)
To her, Bella was Bella— no matter the font. She coped because she couldn't accept to have lost her loved one, and treated the other like the former. The same goes for Galina, Agata and Avrora, but Bella was the closest to her in the labs.
Bella on the other hand was a simple Honkai Beast without awareness but with a purpose. She was then given a soul, a body and a name. She felt so happy everytime Sirin called her like she was something alive. While she was always meant to serve her Queen, it was more than that.