The moment Hiro opened the bathroom door, he froze. What he saw was his mother's friend Natsumi urinating. Natsumi had been asked to take care of Hiro while his parents were on a trip. An awkward atmosphere flowed between them. However, for Hiro, an even bigger problem was that he couldn't suppress his erection after seeing Natsumi in such an indecent state. On the other hand, Natsumi was also stuck in extreme sexual frustration due to her stalled married life… Dangerous time alone together began in the house without parents.
