Of their teenage years, few points can injury people higher than the heartaches that embody unrequited love. Such is the case for Natsuo Fujii, who has found himself entranced by his school’s ever-cheerful teacher Hina. Deflated by this unreachable need, Natsuo humors his mates and attends a mixer. There he meets Rui, a lady whose lack of enjoyment rivals that of himself. After bonding over their mutual awkwardness, Rui takes Natsuo to her dwelling and asks him to have intercourse alongside along with her, hoping that the experience will stop her mates from treating her like a clueless child.
Alongside along with his hopeless feelings within the route of Hina nonetheless on his ideas, Natsuo hesitantly agrees. Equally unfulfilled by their “first events,” the two resolve to half strategies as strangers. However, sooner than he even has a chance to course of this experience, Natsuo’s father drops a major bombshell: he is getting remarried, and his new partner Tsukiko Tachibana is coming over now to meet Natsuo. As if that was not ample of a shock, her daughters—and, in flip, Natsuo’s new sisters—are Hina and Rui Tachibana, the woman he’s in love with and the lady with whom he shared his first night. Now, Natsuo ought to come to phrases with the emotions he has for his step-siblings as his eyes open to a darker side of affection.