Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
Shugo was always told by his late grandmother, "When you have a family in Matsushima, I should serve you."
Just as he said, Yako, a son of Matsushima who is ignorant of the world, who is a lord if the world is the world, asked Shugo, "I want you to teach me how to have sex." It seems that he wants to learn how to have sex at night because he wants to get married with someone he likes.
Shugo accepted Yako's request and became a servant even though he was reluctant. However, seeing Yako react honestly to Shugo's development, Shugo gets hooked on it.
Then, Shugo feels strong jealousy when he learns that the reason why Yako strongly refuses only the last insertion is because he is manipulating for people who like it?