Rui Ijigawa, a sharp-tongued classmate of Honmaru Edojo, balances cunning pranks with a complex duality of traits. Her antagonistic demeanor, marked by relentless bullying through verbal jabs and elaborate jokes, masks unresolved hurt from a childhood incident where Honmaru inadvertently rejected her—a wound that fuels her aggressive facade.

As the volleyball team’s strategic setter, she maintains a close yet contrasting friendship with the reserved Iyona Kawai, their dynamic often sparking candid debates about romance that highlight Rui’s bold, unapologetic perspective. Beneath her abrasive exterior lies unexpected tenderness, occasionally surfacing in moments of crisis when she reveals genuine concern for Honmaru.

Her arc intertwines with Honmaru’s growth as she critiques his dependence on magical shortcuts to earn affection, pushing him toward sincerity and self-reliance. These confrontations spark pivotal introspection in Honmaru, cementing her role in his emotional maturation.

Rooted in a shared history with Honmaru and Jabao Jaba since kindergarten, Rui’s stable home life starkly contrasts her combative school persona. Narrative threads dissect her struggle between pride-driven aggression and suppressed vulnerability, particularly when jealousy or rivalry for Honmaru’s attention arises.

Later arcs subtly weave her trademark mischief with quieter acts of support, reflecting a nuanced evolution shaped by unspoken affection and a yearning for authentic bonds. This duality positions her as a catalyst for both conflict and growth within the ensemble, her layered motives blurring the lines between rivalry and reluctant care.