Kasumi, who lives a newlywed life with her beloved husband, moves into a new house and only thinks about a happy future.One day, she becomes a temporary shelter for her husband's younger brother (a trash human) "Masaki".Of course, Kasumi dislikes Masaki, but her husband tells him that she cannot be left alone because she is her only relative, so she has no choice but to live with him.A few days later, after her husband's business trip began, Masaki occupied the house with a selfish face, and Kasumi repeated words and deeds that made her feel disgust.When Kasumi scolds him...