Natsu goes on a two-day, one-night affair on the train with a teacher from her school who is 30 years younger than her. She has sex with him over and over again, as if to let his body temperature and bodily fluids soak into her body, even though she won't be able to see him from tomorrow due to his transfer. She sweats and feels the middle-aged cock deep in her throat and vagina, and cums over and over again. This year has been the hottest, wildest, and most unforgettable year of Natsu's life.