Miki Yoshida has decided that her final year of high school is going to be her best. Then, Hiroo Sakurai shows up, with a secret that Miki desperately wants to know. Then she starts to fall for him and nothing, even Hiro himself, can stop her.
It's autumn, and Miki Yoshida's life is finally settling into a routine, She and Hiro are spending all their time together, and Miki couldn't be happier, There's just one problem. Hiro's breaking all the rules to be with Miki, and the more time they spend together - and the more they fall for each other - the more there is at stake. With jealous Reika on the prowl, Miki knows they can't hide forever.