Kotone Shirakawa

Height: 153 cm
Bust: 90 cm (H-cup)
Waist: 58 cm
Hips: 85 cm
Favorite food: Cream stew

Ayane's sister and Kazushi's childhood friend.

She is the younger sister of the Shirakawa sisters. The little devil type who looks quiet but actually does bold things. Along with Ayane, she adores her childhood friend Kazushi like a big brother. Recently, she's worried that her clothes won't fit her because her breasts started to grow big again.

(Source: Overflow anime website, translated)