Rui Kagamiya is the assistant to Ren Hojo. She respects him, calling him sensei, and as well as helping him out, she thinks of him as family. She and Ren go to Mount Hikami to do research for his next book. Not much is known about Rui's life. She and Ren were introduced at a magazine company, and because she was good at managing data, he took her on as his assistant. One way or another, she ends up living in his house, and also takes responsibility for most of the housework, since Ren is not good at it. Ren is grateful for her help, although he occasionally loses his temper when she tidies away a book he is looking for.

Model rip by: U653748
https://www.deviantart.com/u653748/art/Rui-Kagamiya-A-Raw-855856725
Conversion and rigging by: KiloRyu