OVA
Description
Kengo Usui attends Tenbi Academy, starting in Class 1-F. He shares a deep childhood bond with Takeru Ooyama and Inaho Kushiya, tracing back to their elementary school days. His personality centers on an intense, frequently comical fixation on women and sexual topics, driving him to devise schemes for glimpsing girls in compromising states and erupting in loud, exaggerated outbursts.

Beneath this overt trait lies fierce loyalty, particularly toward Takeru and Inaho. He declares Takeru his best friend, persistently dragging him into escapades that typically earn Takeru’s irritated or violent rebukes. Kengo’s intrusive antics often provoke physical retaliation from female characters.

He wields a Maken but seldom exhibits notable combat skill or initiative during serious conflicts, overshadowed by peers. His primary role delivers comedic relief through libido-driven slapstick and over-the-top reactions.

Though largely unchanging, flashes of sincerity emerge: he shows authentic worry for friends in peril and joins group efforts to aid them, even when his tactics or motives retain a skewed edge. His background remains unexplored beyond the established childhood connections.

Across all appearances—including OVAs and beach-themed specials—his core remains consistent: extreme perversion for humor, boisterous reactions, unwavering devotion to Takeru, and a comedic support role over plot-critical action. His response to Takeru’s temporary gender change in the OVA reflects his typical lens, fixating on absurd possibilities and self-serving opportunities.