Trước khi em trở thành quái vật

Hajime leads an unremarkable life as an undertaker, but he likes his job and has no reason to complain. Nor can he complain of being always called "onii-san" by one of the top star actresses in the country, Kidō Kotone, a childhood friend. Their relationship has always had a touch of awkwardness due to the parents of both having died violent deaths, but nothing could have prepared Hajime - or Japan - to the deed Kotone decides to perpetrate seemingly out of the blue.