|Alias||Sarumane (Fan Name)|
|Japanese||Aizawa Mai|
- D-ne has long, purple hair and blue eyes. She is mostly seen wearing her school uniform. After becoming B-ko's doppelganger, she has short hair, like B-ko, with a blue ribbon in her hair.
- D-ne is a quiet girl who admires B-ko a lot. She often compliments B-ko and tells her that she likes her. Despite her shy nature, she enjoys poking fun at people until she hits a nerve.
- D-ne revealed that she has a crush on B-ko.
- "...I'll protect B-ko-chan. So... don't worry, alright...?" - (Warning of Impostors, Page 48)
- "But... I think it's wonderful that B-ko-chan has that dual nature." - (Lonely Hide and Seek, Page 42)