After returning from studying abroad, Manabu became lazy, and all day long he could only plunge his head into playing games. His father was Toru, the president of a university. Later, Manabu will also be a lecturer at the school, his father's successor, so he doesn't need to try to do anything. Thinking that after marrying, his son will change and be more responsible, Toru uses his relationship to force Sora, the granddaughter of another lecturer, to date Manabu and move forward with marriage with him. Since the Osawa family is a prestigious family, he does not allow the two to have sex before marriage. After a year, the two officially became husband and wife. But as soon as he got married, Manabu had to go on a five-day business trip. On the wedding night, he was eager, looking forward to finally having sex with his beautiful wife. But before he could insert it, his cock softened. Sora had to comfort her husband that the two had a lot of time. The next day, when her husband left, Sora went to her room and masturbated to relieve her fever for a year. And the father-in-law suddenly appeared, revealing his real reason. He let Manabu marry her so that he could freely invade his daughter-in-law's beautiful body...