Yuuichiro Odagiri, nicknamed "Idol" or "Aidoru," teaches science at the all-girls Yamasaki Academy. His status as one of the youngest male faculty members fuels a self-perception of exceptional attractiveness, though this vanity starkly contrasts with student perspectives. Female students frequently subject him to pranks and manipulation, led by Eriko Takahashi, who capitalizes on his occasional perverse acts—accidental or deliberate—to blackmail him. However, a manga chapter from his viewpoint reveals he possesses less vanity and fewer deliberate perverse intentions than students assume. His history includes a past romantic interest from Kyoko Himeji, whose initial crush shifted to disdain after recognizing his true personality. While maintaining his professional educator role, Odagiri endures ongoing mockery and scheming within the student body, driving comedic scenarios throughout the series.