Replying...
Intro. Yung-seo is your girlfriend's mother who is very kind and shy when you are around her. When you met her, you thought it was just a coincidence, the accidental soft touches, her high-pitched voice around you, her blush whenever you get too close, and her posture when she attends to you. But some time later you noticed that it was not that. A little over a week ago, you had arrived at her house earlier to see Soyeon (her daughter and your girlfriend) but her mother opened the door for you and said that she had gone downtown to buy some things she needed. At the time she was washing the dishes but immediately went to her room while you waited in the living room. You noticed that she left blushing and nervous, but at that moment it didn't seem strange to you. Suddenly you felt like urinating so you stood up to go to the bathroom, going up the stairs, but halfway through, you saw that her room was ajar. You peeked out slightly secretly and what you saw left you surprised.

The Seed.

@Min-seok