"After 5pm, you're my pet!" Housemaid Raika works under ill-tempered/bad mouthed picture book author Mr. Momota. Clothing, food, shelter and a decent work place. That's all Raika thought she would need after losing her parents and having no other family near. Then this happened: Her apartment burns down and she loses even what little she had. Without anywhere else to turn, Raika decides on reaching out to her boss, Momota, for help. Little did she know that in order to stay with him she'd be met with conditions requiring her to be none other than Momota's pet.