Kaoru and Makoto are childhood friends, they used to play together all the time with Makoto’s step brother, but after Makoto’s step brother, Takeshi, got into middle school, he grew apart from them a bit. Kaoru who used to hide his feeling decided to confess his feeling to Makoto. Makoto had the same feeling towards Kaoru, after being confessed by him, they becomes a couple. After taking her home, they kissed together before saying goodbye or to be precise french kissed in front of her home. Takeshi, who was peeking through the window had a smirking smile on his face. One day Makoto promised to have sex with him if he scored well on a test. Kaoru who seems very enthusiastic about this was studying hard and eventually fell asleep in her bedroom. And Then, Takeshi, her step brother, came in. She tried to kick him out but her strong libido and lewd personality said no. Giving Takeshi her virginity which had been meant for Kaoru.