Synopsis
Hatsumi Narita (17) is an extremely ordinary high school student who lives an uneventful life with her older brother Shinogu (20), her younger sister Akane (15) and her mother. Her father has been working away from home for quite some time.
One day, Akane’s fears that she might be pregnant become known to Ryoki Tachibana (17). He exploits this knowledge to blackmail Hatsumi into becoming his slave. A surprising face from the past comes to her rescue: mens fashions model Azusa Odagiri (17) has returned with his father. Azusa effortlessly pries Hatsumi from Ryoki’s evil clutches.
Hatsumi discovers that she is becoming attracted to Azusa. They go on a date, and after returning to their homes, they video call each other over their phones, during which Azusa tells Hatsumi that he wants to see her naked. Despite her shyness, Hatsumi points her phone’s camera toward her body.
When Hatsumi wakes up the next morning, Shinogu tells her he has received a video from Azusa, in which she is naked. Despite feeling deeply hurt, she calls Azusa to find out why he did it. According to Azusa, his mother was seduced by Hatsumi’s father, then dumped, which devastated her emotionally. Upon learning of this shocking truth, Hatsumi apologizes to Azusa, but Ryoki admonishes him. This brings about a change in Hatsumi while Ryoki begins helping her with her studies.
Before long, Hatsumi learns that she and Shinogu are not actually blood relations.
She also discovers that he has been in love with her for a long time. In the midst of all this confusion, Hatsumi grows closer to Ryoki, until he discovers that Azusa’s mother was actually having an affair with his father. Shaken by the repercussions of their parents’ indiscretions, Hatsumi becomes uncertain about her relationship with Ryoki, and impulsively offers herself to Shinogu. However, even this is not enough to make her forget her feelings for Ryoki.
At a park facing Tokyo Bay, Hatsumi and Ryoki chase each other. Why is she capable of having sex, now that she’s 17? Why was she born, and what is she living for? The moment she kisses Ryoki, the answer to those questions becomes crystal clear.