Dyes his hair a striking red and refers to himself as "the fighting master." Previously undefeated, he faces repeated defeats the moment he enters Hekikuu High, severely damaging his self-confidence. Upon Ogisu's first encounter with Kitano, Kitano mistakes his red hair for blood and rushes towards him, causing Ogisu to flee in fear. Convinced that Kuroda is the guardian of Hekikuu and Kitano ranks second, Kuroda informs him he can only fight him after defeating Kitano; although Koiso tricks him into thinking he once beat Kitano, he ultimately gets beaten again. After meeting Shirataki, he endures several beatings from her; humbled, he decides to learn the secrets of Koiso-style kobujutsu and joins the Koiso dojo. By the series' end, he realizes he remains a formidable fighter but was simply outshone by Kitano's invincible prowess.
In the conclusion, he stands as the sole individual respecting Kuroda, who utilizes him as a subordinate, hoping to leverage his strength for protection during crises.
