The second season of Gantz redeemed the whole show. It went from being an infuriating and boring watch to suddenly locking in and making me not want to put it down at all. The very first episodes are like season 1, a shitshow. By the middle of season 2 the show suddenly gets good and the characters actually get some development to at least make you care for them if they die. Kei, the main character, had a very good development in a short amount of time and that was able to save the show. The filler ending was alright for what it was.