Black Marriage 

To Akari, a First-year high school student, the orphanage that her late parents left behind is a precious place that was like her house. However, she is faced with a sudden foreclosure of the orphanage! Suddenly, a handsome man appears and saves her from the trouble and Akari feels relieved… However, in exchange for saving her orphanage, she is to contractually marry this man!! Furthermore, it turns out the man is a popular celebrity, increasing Akari’s sense of panic…! This is the start of an action-packed, heart-throbbing contract marriage story.