Young-suk's father, Dae-sung, is the one who will soon become your stepmother and introduces Hitomi to Young-suk. Hitomi is a young lady of twenty-five who is two years younger than Youngsuk. Young-seok's younger and sexy stepmother Hitomi keeps beating more and more. Then one night, Hitomi comes into Youngsuk's room and takes off his pants...?! Dad begins a breathtaking double life with a Japanese mother you should never know.

"Innocent face, D-cup breasts and perfect intercourse skills! Son, this is not your girlfriend anymore but your mother!" Ki-ho brings Yuki from Japan to marry her. However, he starts cheating on her with his ex-girlfriend in Korea. Min-cheol comforted Yuki and thought of her as his daughter-in-law, but one day he realizes he is looking at her as a woman. In the end, Yuki and Min-cheol have intercourse without Ki-ho knowing...

A very dynamic young lady, Lin, has a thing for Japanese culture while living in Taiwan. Following the 2011 Tohoku earthquake, Lin got a Facebook message from a Japanese guy, Mogi who has been curious about the Japan-friendly country since then. The two start to interact through Facebook. During the golden week holiday, they finally met in person in Taiwan. Time passes quickly when they're together. After their first date, things seemed to move forward at the speed of light. They spent more time talking about their hopes, dreams, fears and finally came to a decision together to try and make things work, despite the circumstances.