My Slender, Big-breasted Girlfriend Was Cuckolded And Seed-pressed By My Father. Mei Satsuki

Mei, a college student dating Takeru, goes to greet Takeru's father, Ichiro. While thinking of her as his son's girlfriend, Ichiro falls in love with Mei at first sight. During their conversation, it comes to light that the company where Mei's father works is a subsidiary of Ichiro's. 'If you're getting married, you might as well live together now. I'll talk to your father,' he says, using his position to make Mei live with him.