成咲 紅葉

Class: 2-B
Favorite food: Cat-shaped omurice
Hobbies: Crossword puzzles, taking care of the protagonist
Troubles: She's a bad cook, can't beat the protagonist in studying, can't watch horror movies alone and her period always starts late after having sex.

Yuuya's childhood friend and neighbor whom she also shared her first kiss with when they were younger. Though they're the same age, Momiji was born only a few days earlier. Due to both of their parents often going outseas, their parents leave Momiji to take care of him. She joined the cooking club in order to become a better cook.

She is good friends with both Eruru and Hikari.