Zig☆Zag Don

Ichina is a second-year high school student living with her mother, Youko, whom she strongly dislikes. Following the end of her relationship, she engages in a one-night stand with her best friend, Sekitani, who has also recently ended a long-term relationship. The story explores whether their connection might develop further. Upon returning home, Ichina discovers an unfamiliar man present with Youko, raising questions about his identity.