He is Yaguchi Haruo's best friend. They became friends in middle school and stayed in the same school all through high school. He is shown to care very much for Haruo. He shows signs of having non-platonic feelings for him, the first sign being him telling Haruo that if he didn't explain himself about Ono, he would kiss him. He pulled it off as a joke, but his facial expression showed signs of seriousness. Another sign is when he said "My Haruo", which Haruo caught, even looking up questioningly at him. He also covered for Haruo when he was confronted with Ono and Hidaka. He also seems uncomfortable when it comes to the two girls, who both love Haruo.