Our favorite character in Gantz, Nishi Joichiro got a special 13 pages manga chapter. It conveys a short story that happened before Katastrophe started, so be sure to read it after chapter 302 if you want to respect the chronology. Overall, it’s the usual slice of life romcom Gantz with a girl stalking Nishi because she likes him. Being so short, it only covers one meeting between them but I say it’s enough, the unnamed girl is cute and Nishi is as cool as ever, their interaction was pleasant and fun. Highly recommended to all Gantz fans and especially Nishi fans. Unlike the main manga, there isno rape, violence, destruction and blood. It’s just Nishi and this girl after school.