Age: 17 Height: 154cm Weight: 47kg Blood Type: AB

Guest's younger sister. Although she is high school age, she skipped grades to enter university and conducts suspicious research. She drugged her brother, who had been a shut-in NEET for nearly two years, as part of her "Brother Rehabilitation Project," turning him into a girl. Not only is she smart enough to skip grades, but she also has great athletic ability, having been a state-level track and field medalist in middle school.

Age: 17 Height: 157cm Weight: 52kg Blood Type: AB

Mihari's classmate. She has a gal style, but it's a high school debut; she was plain in middle school. She is an expert in fashion and makeup and teases Mihari for her lack of style.

Age: 1st year middle school student Height: 149cm Weight: 42kg Blood Type: A

Kaede's younger sister and classmate to Asahi and Miyo. She has a bob cut tied at the back. She almost exclusively wears pants outside of her uniform and is often mistaken for a boy. She has a bit of a "chunibyo" phase and once happily wore an eyepatch.

Age: 1st year middle school student Height: 148cm Weight: 45kg Blood Type: O

Classmate to Momiji and Asahi. She hides it, but she's a massive GL fan, fantasizing about pairings like Guest x Momiji or Momiji x Asahi. She hates being the center of a pairing herself. She has a complex about her large bust size. She's a terrible cook but remains blissfully unaware of her lack of skill.

Age: 1st year middle school student Height: 151cm Weight: 43kg Blood Type: B

Classmate to Momiji and Miyo. Yellowish hair and a snaggletooth. Flat-chested. Energetic and innocent. She's too honest to lie.

Good at sports, bad at tests. Zero sexual knowledge; doesn't understand periods. Mistook Momiji for a boy at first.