She is the eldest of four siblings. Ichika, who used to help her parents with housework, makes use of her special skills to work as a temporary staff member for a housekeeping service. Tamawa was the first customer to nominate Ichika, who had just joined the company, and has been nominating Ichika on a regular contract since then. However, the purpose of such a tamawa is not housework, but her body. "Is she the next target?" asked Oshima, a bondage maniac, who came in disguise as a visitor.