Komori was Honda's catcher since his earlier days as a little leaguer back when they were in Mifune Dolphins along with Sawamura and Shimizu. At first he was being bullied by Sawamura but was helped by Gorō and solved the problem. He continued to catch for Gorō when he returned from Fukuoka in Mifune East Middle School but ended when Mayumura eliminated them single-handedly in their game with Kaido Affiliate. In season 3 when Gorō left Kaido and entered Seishuu, they become rivals where Gorō eventually won. After High school, Komori went on to play for his Uni as their pinch hitter so far.