Aoi Yuzuki is a first-year high school student and the ace player of her school's girls' volleyball team, celebrated for her athletic skill. At school, she consistently torments her classmate Sōta Tsukishima. Yet beneath this outward hostility, she secretly harbors romantic feelings for him. Her connection to Sōta intensifies when she starts visiting his family's public bathhouse, carefully hiding her identity. A pivotal moment occurs during one visit: Sōta, working as a back washer, gives her a massage without recognizing her. This physical contact ignites her feelings, heightened by the realization that he is the one touching her. This encounter sparks a romantic comedy dynamic filled with misunderstandings and tension, fueled by Aoi's hidden affection and her contrasting behavior towards Sōta in different settings. Physically, she has dark orange hair, orange eyes, and stands about 1.60 meters tall.