A story about a girl Noa Eikawa, after her mother moved on, but unfortunately for her, she married a perverted old man. When her mother went out to go to the market to prepare dinner, he would return. took advantage of his time at home to rummage through his wife's daughter's underwear, accidentally letting his daughter discover it. But she didn't dare do anything, because he was also her stepfather, and also because he knew that his daughter had discovered her perversion, he became more and more perverted to the point of raping his wife's daughter.