Inukai presides as the principal of Kawakara Branch School, a rival institution locked in competition with Onodera Academy. A calculating strategist, he maneuvers to usurp administrative control by exploiting a legacy rule established by Onodera’s former principal—a clause granting leadership to whoever successfully seduces Makoto Onodera, the academy’s chairman. This drives him to engineer schemes where Makoto is targeted by Kawakara staff or students, aiming to fulfill the condition and seize power.

Sporting grey hair and prominent snaggleteeth, Inukai’s sharp features underscore his antagonistic demeanor. His actions are fueled by ruthless ambition and an intense rivalry with Onodera Academy, often employing covert tactics to corner Makoto into compromising situations. He allies with figures like Naraha Momotarou, collaborating to further his agenda through manipulation and strategic pressure.