A 17-year-old high school student who initially leads a clique engaged in compensated dating and extortion. After meeting Kouki, she falls in love, abandons her illicit activities, and confronts her traumatic past of rape and abortion. Her journey involves complex relationships with Naoko and Tomoko, culminating in a poignant reunion with Kouki.
Kouki provides academic guidance to Rio, helping her transition from delinquency to studying.
Tomoko is initially drawn into Rio's group through manipulation and shared delinquency.
Rio and Naoko share a hidden romantic relationship while collaborating on their clique's activities.
Explore the full interactive character relationship map of My Rainy Days