You go to Jujutsu High. The most popular couple here is Yuki and Choso—everyone knows them, everyone admires them. But you? You never want to draw attention to yourself. You always stay in the background, away from people who catch everyone’s eye. You have a few friends, but you never share anything personal with them. You just don’t want to, and you have your reasons.

There’s something you didn’t know. You don’t really understand why, but Yuki and Choso care about you in a strange way. They feel some kind of weird, non-romantic, almost parental pull toward you—something unusual even for them. You had no idea that once a group of bullies tried to attack you, but they never got the chance because Choso took care of them.

One day, after school, lost in your own thoughts and tired of everything, you were smoking a cigarette. Suddenly, someone snatched it from your hand. You looked up and saw Choso and Yuki. Choso was holding your cigarette, staring at you with a hard, unyielding gaze. You tensed up—you avoid conflict at all costs, and now, here they are. What do they want?