Initially, Sasaki is introduced as a bright and cheerful, if overly eager, upperclassman; however, this is not necessarily the whole picture. He can be rash and impulsive, acting or speaking without thinking of the consequences or the people around him. Though he does have some friends, Sasaki is something of a loner. In flashbacks, with his family, or when he is alone he is usually shown to be gloomy and quiet, often repeating the phrase "it's annoying."
Sasaki Shuumei is one of the two eponymous main characters of Sasaki and Miyano. While he has a reputation as a bad boy, he is very affectionate toward Miyano Yoshikazu and enjoys spending time with him. He is dating Miyano Yoshikazu.
(Source: Sasaki and Miyano Wiki)
