Juu-gatsu no Hanabi10-gatsu no Hanabi; 10月の花火; Juugatsu no Hanabi; Fireworks in October; Октябрьский фейерверк

After his first summer break in college, Taichi installs a dating app out of frustration at not having a girlfriend. To his surprise, he matches with a woman he once saw crying at his summer beach job Source: MangaPlus