鳴沢 亜由美

Ritsu's mother, who was once a genius swimmer.

Though she seems strict, she's actually a kind mother deeply devoted to her daughter. She confessed her masochistic tendencies to the protagonist and stopped pretending to be someone she's not, but she still lacks confidence and keeps her distance from him.

She can't hide her confusion when her daughter Ritsu becomes affectionate towards him, yet she truly cherishes Ritsu. Her biggest worry is that Ritsu is starting to resemble her.

"I no longer have any charm as a woman..."