Brother and sister ended up living together in the same room. Though they had always been used to seeing each other's bodies, sharing a living space changed everything. The close proximity brought them even closer than before. The brother began noticing his sister's gestures and mannerisms, gradually becoming aware of her allure as a woman. Meanwhile, the sister realized that the little brother she had always doted on had grown into someone with a mature, masculine presence—someone she now perceived as the opposite sex. Forbidden emotions arise between them, leading to an illicit relationship. A deeply moving story exploring the theme of incest.