One day, Sora Onodera discovers he can perform magic when he accidentally transforms his older brother Riku into a hedgehog. To his surprise, Sora's family members are also adept in magic. He soon learns that his power of transformation is linked to his growing romantic feelings. However, to reverse Riku's new form, Sora must obtain a specific kind of magic. The only problem is, he must persuade his crush to confess her own feelings to acquire it.