Introduced through a mutual friend, Kengo and Shimi quickly built a smooth relationship. On weekends, Shimi would stay over at Kengo's place, and each time they found an excuse to have sex, establishing a routine. However, Kengo began wondering if it was wrong to initiate sex every time, while Shimi hesitated, questioning whether she should ever make the first move herself. Since neither fully understood the other's feelings yet, they often overcompensated or caused misunderstandings. Even so, their bond gradually deepened—but what will become of their relationship in the end?