: During a freshman practice session, Mitsui pushed himself too hard and suffered a severe knee injury.
: While sidelined, he watched from the bleachers as Akagi, who was less skilled at the time, began to improve and receive the attention Mitsui craved. The combination of physical pain and the feeling of being replaced eventually led him to quit basketball and fall in with a delinquent crowd. Current Events Slam Dunk (Dub) Episode 26
: Because of his profound respect for Coach Anzai, Mitsui chose to attend Shohoku High School to play for him, turning down offers from prestigious basketball powerhouses. The Turning Point : During a freshman practice session, Mitsui pushed