"Innocent face, D-cup breasts and flawless sex abilities! Son, this is not your girlfriend anymore but your mum!" Ki-ho brings Yuki to marry her. He starts cheating on her with his ex-girlfriend in Korea. Yuki comforted and idea of her as his daughter-in-law, but he understands he is looking at her being a woman. In the end, Yuki and Min-cheol have sex without Ki-ho knowing...