On the surface, Tachihara is an arrogant, impulsive, rash individual, more than willing to solve problems through sheer brute force and his dual guns. A violent temper leads to frequent conflict between him and other mafiosi, namely Gin, whom Tachihara views as creepy and frequently insults, leading to arguments, and Hirotsu, who often shuts Tachihara's temper down by threatening him. Tachihara's self-preservation prompts him to obey Hirotsu in the end, albeit reluctantly.