Kyou Kasahara

Kyou Kasahara is a first-year high school student at Eimei Junior and Senior High School and a member of the Badminton Team. In contrast to Taiki's boisterousness, Kyou is level-headed, able to read situations rationally and always look at the bigger picture. Because he is often times blunt, Taiki calls him harsh; but during truly tense situations Kyou can get anxious and say silly things.

(Source: Blue Box Wiki)