Shota, who lost his father when he was young, was raised by his mother with great care. Shota had come to love his mother, who loved him wholeheartedly, as a woman. One day, because he hadn't been able to do anything like a parent until now, his mother Hitomi invited him to a hot spring trip to go on a graduation trip alone before graduating from university. Shota accepted the invitation, and he was thinking something bad...
