Birthday: May 22He is one of the more interesting characters of the team. When his spirit is up, he plays excellent basketball, however his dependency on the state of his spirit is also his greatest weakness. He is quite the opposite of Hanamichi when it comes to will power and determination. His confidence is fragile. Even though he has been awarded the MVP in his junior high, he gives up too easily. During the final match in his junior high, with 3 points to go and a few seconds left, he lost his spirit at the most critical moment. Then Coach Anzai re-lit the fire by encouraging him not to accept defeat until it is over. From that game, he deeply respected coach Anzai and wanted to show his gratification by joining Coach Anzai team, in Shohoku. Even after Coach Anzai revived his spirit, his fragile confidence was not improved. Because of a knee injury which left him out of the start of the season, he gave up basketball altogether and became a troublemaker with a local gang all the way until his third year. He has always wanted to play basketball again, but he is too insecure to admit it. He finally broke down to Coach Anzai and asked the coach to let him play again. Even after all these years, Mitsui fragile confidence still gave under pressure against Shoyo. But with a boost of confidence from the coach, he was able overcome himself.Position: Shooting Guard
Jersey number: 14
Height: 184cm
Weight: 70kg
Year: 3
Classroom number: 3
Shoes brand: Asics
Remarks: MVP in middle school basketball league, excellent 3-pointer