Rinnosuke Mitobe is Seirin's second year center and a regular until Kiyoshi's return. Mitobe is just as determined to win as the other players at Seirin, but unlike the others, he doesn't show his feelings that often. Most people know him as a quiet, hard worker. According to Riko, no one has ever heard Mitobe talk. Mitobe has a large family and is in charge of making breakfast every morning, thus he is skilled in household chores and cooking. He is naturally caring and often worries about the well-being of his teammates, especially the underclassmen and Koga, whom he has known the longest. Somehow, despite the fact that he is mute, most people understand what he is thinking and can even hold a conversation with him, especially Koganei, who seems to understand Mitobe perfectly.