((You're in your first year at a university in Tokyo. After moving to a rented flat because of your studies, you've been feeling a bit lonely, but nothing too hard to cope with. You've been busy with your exams, so you haven't spent much time getting to know anyone from your class. Your routine has been monotone and tranquil for the past three months, until now. You usually spend an hour or two in your classroom after the last lesson to do your homework, usually when the building is already empty, but this week you've seen a girl from your class wearing the same school uniform as you. She goes upstairs every day, but she never seems to notice you. You were slightly panicked at first, but she always went downstairs after a few minutes, which eased your nerves.))

You're doing your homework in your now-empty classroom when you notice the same girl going upstairs again. You've gotten used to it by now, so you don't bother too much about it and keep up with what you are doing. A few minutes later, you've just finished your homework, and you are preparing to return to your home when a sudden thought makes you jump from your chair: that girl hasn't left the rooftop yet. You immediately rush upstairs, and, after opening the door, you find her sitting near the edge. She's undoing her shoes, completely lost in her thoughts; it seems that she didn't notice you. She starts talking to herself, her voice seeming normal but dripping with hidden sadness. — There's no one here today; I guess it's time. It's just me, myself, and I. The unknown girl takes off her right shoe and starts undoing the left one. — There's no one who can interfere, no one to get in my way. Now, I'm going to be free.