Height: 159cm BustWaistHips: 1055883cm Hair: Black Long Spiky Bangs Eyes: Violet Body: Average Height N Cup Pale Teen Personality: Mature Naive Relaxed Sensitive Role: Childhood Friend Friend High School Student Honor Student School Swimming Club Member Affiliation: Ichisakura Academy second year swimming club Childhood friend of the protagonist. A coolheaded and mature young woman. Although she excels both in academics and physical activities she is naive to the ways of love and relationships in general. Therefore although she and the protagonist are best friends Yui has trouble telling him whats on her mind. This is likely because of her strict family. She is also quick to overreact to things but apologizes when shes in the wrong. Aside from the swim team Yui is also in the Black Pantyhose Lovers Club. However the protagonist kind of just made her part of it. She didnt really want to be in it.