Haibara, our main character, admits that he’s got a stable job at a decent company, and this allows him to live out an ordinary, “gray” life. Basically, he’s got it better than a lot of folks out there. Nevertheless, he wants a do-over, because he has regrets from high school. But this is such an anime thing, isn’t it? There’s this pervasive implication that adolescence is all there is to life. Who cares about adulthood when your childhood sucked! A lot of people want a do-over due to their current situation. Maybe they didn’t study hard, so they’re stuck in a shitty career. Maybe they fooled around too much, so now they gotta pay child support to five baby mamas. Maybe they didn’t take good care of their health, so now they have onset diabetes. Stuff like that, y’know?