Nekomaru Nidai, a student of Hope’s Peak Academy’s Class 77-B, is hailed as the Ultimate Team Manager for his unparalleled skill in coaching and motivating athletes. Born with a congenital heart defect that confined him to a hospital bed in his youth, he defied a grim prognosis after forming a deep bond with fellow patient Daisuke, a dedicated team manager. Following Daisuke’s death, Nekomaru vowed to honor his legacy by devoting himself to athlete management, crafting demanding training programs focused on physical endurance, sharpened reflexes, and mental fortitude. He supplemented these regimens with a distinctive massage method to alleviate muscle strain, playfully dubbing it his “ultimate weapon.” At Hope’s Peak, Nekomaru’s loud, exuberant demeanor and unshakable optimism cemented his role as a natural leader. He championed teamwork with boisterous enthusiasm, mentoring peers like Akane Owari through grueling workouts that balanced relentless challenges with attentive care. His loyalty, however, became a vulnerability when Junko Enoshima weaponized his class’s devotion to Chiaki Nanami, brainwashing them via a manipulated video of her demise. As a Remnant of Despair, Nekomaru embraced global destruction, his once-supportive spirit twisted by despair. Trapped in the Neo World Program, his consciousness reverted to its pre-corrupted state. During a critical trial, he heroically shielded Akane, sacrificing his body and emerging in a mechanized form. Even as a robot, his drive to uplift others persisted. Restored to life post-program with memories intact, he confronted the consequences of his actions as a Remnant. In the Hope Arc, Nekomaru joined his classmates to thwart Ryota Mitarai’s brainwashing broadcast. With Hajime Hinata’s guidance, they reclaimed autonomy, channeling their guilt into redemption. Nekomaru’s combat prowess shone during clashes with Monobeasts, underscoring his physical mastery and tenacity. Ultimately, he stood alongside his peers, alive and resolute, dedicating himself to forging hope from ruin. Nekomaru’s journey traces a turbulent arc from nurturing mentor to despair-fueled destroyer and finally to a redeemed pillar of resilience. His story intertwines loyalty and sacrifice, mirroring the perpetual struggle between hope and despair, all fueled by his unwavering commitment to lift others—no matter the cost.