Motoi, a main character in his early twenties, sports disheveled orange hair and an almond-shaped head. As a newcomer within the idol fan community, he integrates into top fans' circles like Eripiyo and Kumasa while working part-time at a cram school.

He identifies as a "Lear Love" fan type, defined by serious aspirations to date and marry his favored idol Sorane from the underground group ChamJam. This contrasts sharply with typical emotionally detached idol fandom. His devotion manifests through visible "Crush Blush" reactions around Sorane and frequent romantic daydreams, positioning him as an outlier among peers who maintain more detached support. Despite this fixation, he exhibits comparative level-headedness in non-idol contexts.

Persistent shyness around Sorane masks underlying possessiveness, occasionally flaring as jealousy toward potential romantic rivals. His dynamic grows more complex due to Sorane’s physical resemblance to his younger sister Reina—a fellow ChamJam enthusiast—which carries uncomfortable implications despite ambiguous intent. Reina reciprocates with cold interactions, reflecting their strained relationship.

Throughout his arc, Motoi grapples with internal conflict between romantic obsession and unspoken idol-fan boundaries. Actions like distress over Sorane’s hypothetical romances underscore this tension between personal desire and communal expectations.