Following a tragic incident that leaves her without a home, 16-year-old Tooru moves in with her grandfather but ends up living in a tent due to renovations. Preferring independence over burdening others, she keeps her situation hidden. However, her secret is uncovered when a landslide destroys her tent, leading her to be taken in by Yuki Souma, the school's 'prince,' and his author cousin, Shigure Souma. Tooru soon learns the Souma family's extraordinary curse: each member transforms into a zodiac animal when hugged by the opposite sex. As she delves deeper into this mystical mystery and encounters more zodiac members, Tooru's compassionate spirit faces the daunting truth lurking within the Souma household.