The story opens with the protagonist as a corporate drone, ground down every day by life and his boss, starting to think about ending it all. At the subway station entrance — the Japanese favorite for this sort of thing — he stares at an oncoming train and considers jumping. One little hop and it’s all over. Of course, he doesn’t have the guts, so he keeps scraping by. Right when he’s at his lowest, he meets a girl who asks him to help her get into a mixed-bath bathhouse. Her reason is simple: she’s never been in one and wants to see what it’s like. The girl calls herself Nagisa. She seems cheerful enough, and not only does she drag him into a mixed bath, she hauls him all over the place — eating good food, trying new things, sightseeing by the sea, vacationing on a little island. Maybe it’s some kind of magic spell, but he just lets her pull him along. Total strangers, yet the two of them do couple-ish things together like a string of dates, and eventually they do the thing couples do, too. Then, right after they’ve finished and he drifts off, he wakes to find she’s quietly gotten up and walked out onto the balcony. She thanks him, says she’s an unforgivable murderer, and that her last wish has been fulfilled. Then she jumps. She hits the ground hard and lies there in a pool of blood.