One day, Ken is told by his mother that her friend Naomi will be staying over, leaving him visibly uneasy. The reason? Three years earlier, during a previous visit, Naomi had attempted to assault him. Though the incident ended in failure, it left a deep sense of discomfort between Ken and Naomi, making their encounters awkward ever since. As night falls, Ken's mother and a drunken Naomi return home, and Naomi confesses she knows everything about him. She then forcefully takes Ken's virgin lips, whispering before leaving, "Come to my room when your mother's asleep." Those words mark the beginning of a new, twisted chapter.