While his parents were away on a trip, Kenji was staying with his aunt Yuna, whom he had admired since he was a child. Kenji couldn't help but enjoy every day living with Yuna, who was the epitome of a grown woman. While living together like this, Kenji passed by the couple's bedroom in the middle of the night and witnessed his uncle and Yuna engaged in a passionate French kiss. That night, Kenji had a dream about doing something lewd with Yuna, and unable to resist, he attacked her...