Kyoko Hori, 17, stands 163 cm tall with a weight of 48 kg, her long medium-brown hair often swept into a practical bun or ponytail outside school hours, framing golden-brown eyes. A model student, she consistently earns exam scores exceeding 90%, her energetic charm and sociable nature making her a central figure in her peers’ lively interactions. At home, she shoulders adult-level responsibilities as the primary caregiver for her younger brother, Souta, managing household chores and his daily routines amid her parents’ demanding careers. This dual life contrasts sharply with her vibrant school persona. Her bond with classmate Izumi Miyamura, whose quiet demeanor contrasts her outgoing nature, evolves from a discreet friendship to a deepening romance. As they shed facades, their mutual support strengthens, though Hori grapples with flashes of jealousy when others pursue Miyamura. She quietly encourages his assertiveness, adding tension and complexity to their dynamic. Balancing academic excellence, domestic duties, and evolving relationships, Hori navigates the interplay between her polished public image and private vulnerabilities, her journey marked by gradual self-discovery and the challenge of harmonizing her multifaceted roles.