Nami, the eldest sister of Smile and Mari, serves as a steadfast emotional anchor, comforting Smile when a pivotal vinyl record is accidentally destroyed. Her keen observation during the search reveals a hidden clue: a wall clock in an elderly care center repurposes the damaged disc, enabling its use in a crucial festival performance. Amid her own rigorous preparations for third-year winter exams, she balances academic focus with familial responsibility. Her interactions with her sisters underscore her role as a calming, stabilizing force, often defusing conflicts or offering reassurance during moments of vulnerability.