Maruyama, who runs a manufacturing business, takes a liking to Ren, the daughter of a subcontractor factory, and plans to make her his own. While flickering the restrictions on orders, he welcomed Ren into his home as a tutor for his own son. Maruyama who rapes Ren aiming for the gap when his son is not there. Maruyama's fierce anal rape who loves buttholes ... The son who peeked into the indecent appearance of such two people ...