The protagonist, Usami (Mrs. Usa), has become a nursery teacher, which was her childhood dream. She meets Sato at work and starts dating him after he confesses his feelings to her. He says that he has separated from his wife, but in reality, they are not yet divorced and are living separately. Rumors spread within the nursery that she is having an affair, and he is forced out of her workplace Six months later, she finds a new job with better conditions than her previous one. Usami, who is passionate about her work, meets the mysterious and handsome president who comes to pick up the children one night. Usami thought that "romance is forbidden for the time being!" but little by little, she and the president start to get closer. Meanwhile, her ex-boyfriend Sato comes to the workplace. The situation develops in an unexpected direction...