Karen Kawai has finally achieved her lifelong dream of becoming a nursery school teacher, but there is one issue - her face resembles that of an ultimate villain. As soon as her young students catch a glimpse of her, they burst into tears and run away. Meanwhile, Karen admires the successful and physically appealing nursery teacher, Taihei Hosaka, who originally worked as a coroner. However, he criticizes her incapability of forming relationships with her class rather than her appearance. He explains that her lack of interaction is the reason for the children's distance, not her facial features. Karen takes his advice and begins connecting with her students. As she progresses, Hosaka unexpectedly proposes to her. Karen is left unsure if he is serious about his intentions.