 Mitsui is best known on the team as a three-pointer specialist, only matched by Jin from Kainan.His three-pointers help Shohoku catch up when they are 12 points down against Shoyo, and again when the team was 20 points down against Sannoh in the national championships.His defensive ability while playing center completely shut down Sakuragi during a practice match as well as Fukuda in the match against Ryonan.