Yosuke Hirata enters Advanced Nurturing High School as a first-year relegated to Class D after violent outbursts rooted in unresolved guilt from a traumatic middle school incident. Academically adept and athletically skilled, his striking blonde hair and brown eyes draw frequent admiration, while his diplomatic approach to conflict and innate empathy solidify his role as class representative, trusted for prioritizing unity and collective advancement. Central to his psyche is a self-assigned "messiah complex," forged by regret over abandoning childhood friend Sugimura during relentless bullying. Witnessing Sugimura’s spiral into despair—culminating in a suicide attempt—etched enduring remorse into Hirata, fueling his compulsive need to shield others from suffering. This drives his calculated faux romance with Kei Karuizawa, using his social influence to deter her tormentors, even as their arrangement strains under unspoken tensions. His idealism faces repeated trials, exposing fragility beneath the composed facade. During a survival exam on a deserted island, class cohesion frays as disputes erupt over stolen resources and Karuizawa’s missing underwear. Hirata deflects suspicion from Kiyotaka Ayanokōji without evidence, clinging to unity over accountability. Yet when forced to defend traitorous classmate Yamauchi Haruki, his rigid moral code fractures, triggering public breakdowns that lay bare the conflict between his pacifist ideals and the ruthlessness reality demands. Ayanokōji’s influence gradually destabilizes Hirata’s avoidance of uncomfortable truths. Confronted about his preference for surface harmony over difficult decisions, Hirata begrudgingly accepts that some sacrifices are unavoidable, though he vows to mitigate collateral damage. His sharp intuition unravels Ayanokōji’s covert manipulations behind class victories, yet he chooses silent complicity over confrontation. Hirata’s past reveals a shift from mediocrity to self-imposed martyrdom. Once a bystander who ignored Sugimura’s pleas to avoid becoming a target himself, he now channels that guilt into vigilant protection of peers, rejecting violence as a solution. Despite widespread admiration and romantic overtures, he maintains emotional distance, fixated on atonement through safeguarding others—a penance both redemptive and isolating.