Nana Mifune, a classmate of Shuichi Kagaya, sports long, tousled brown hair and dark brown eyes. A kind and intellectually sharp student, she secures a college recommendation after Shuichi declines the opportunity. This pivotal moment drives her to confront him, blending gratitude with candid acknowledgment of his indirect role in her success. Observant and intuitive, she detects shifts in Shuichi’s behavior missed by others, recognizing his concealed struggles beneath a veneer of detached composure. During a rooftop encounter, she returns borrowed notes to Shuichi and probes about a scar on his neck, met with his evasive quip about a "tiger-sized cat." Their conversation deepens as she poses a hypothetical scenario about averting global catastrophe, mirroring his determination to act decisively against existential threats. Her pragmatic optimism surfaces here, balancing realism with a resolve to confront adversity head-on. Though their bond remains strictly platonic, it thrives on mutual respect and quiet emotional depth. Nana anchors Shuichi during personal turmoil, offering subtle yet steadfast support. Her name carries symbolic layers—"Nana" (from the character for "apple tree") and "Mifune" (combining "three" and "boat")—though these nuances remain unexplored within her narrative.