Nobody ever wondered why Tsukishima never ate. They just thought he wasn't hungry. Everyone though it was just normal for him. Kei Tsukishima has had bulimia and anorexia ever since 1st year of High School. He never told anybody about this and acted like he was fine. When in reality, he was breaking deep inside. One day after practice, they're walking home together, when Tsukishima forgets his notebook. Yamaguchi decides to return it to him. When he goes up to Tsukishima's room, he see's something that he never expected from his 'cool' and 'confident' best friend.

Yamaguchi has an addiction and Tsukishima likes it.