Kimihiro Tsutsui
Kimihiro Tsutsui (筒井 公宏 Tsutsui Kimihiro) is a character from the anime and manga series Hikaru no Go.
Kimihiro appears in the early chapters in a tournament. Later Kimihiro finds Hikaru Shindo at Haze Middle School's festival.
Kimihiro is asking Hikaru (Fujiwara-no-Sai is at first doing the problems for Hikaru) to solve problems. The first problem is easy, therefore Hikaru asks Sai if he can do it. Hikaru gets the right answer gets a tissue. Hikaru knows Sai wants a book, so he solves another problem, but gets a can of soda. Kimihiro then puts out a problem that he believes that Akira Toya can solve. Tetsuo Kaga steps in and solves the problem by putting his cigarette out on the board.
After the confrontation between Tetsuo and Hikaru is over, Hikaru joins Tetsuo and Kimihiro in the Haze Middle School tournament. The group defeats Kaio Middle School but is disqualified because Hikaru is actually a sixth grader in elementary school. Later Hikaru joins the Go club, and Kimihiro and Hikaru dream of defeating Kaio Middle School once again.