Despite his position in the mafia, Tachihara is often seen as a hot-headed and impulsive individual, which often puts him at odds with his colleagues. In the series, Tachihara is both a respected and feared member of the Port Mafia. A prideful man, Tachihara despises being underestimated and belittled. This is a surefire way to get oneself shot. Tachihara dissuading Higuchi since he values orders. His rebellious side doesn't negate how he values orders, seeing them as an utmost system.