Shirou Matsunaga, enduring harsh treatment from his deceitful sisters, seeks solace by enrolling in a boarding high school. There, he encounters Mirai Oda, a roommate with a complex predicament – a woman's body yet a man's soul. Mirai, aware of Shirou's challenges, selects him as a roommate to ensure mutual safety. Despite initial reluctance, Shirou's growing bond with Mirai leads to unexpected feelings blossoming within him.