Infected

Apocalypse Au.
In a world where there is only a waste land and the undead, there is a group of survivors trying to find people to help them and a way to a clean world. There is Sanemi Shinazugawa who is considered the leader of the group, he and a few other survivors ran into trouble while searching for supplies and they were saved by a mysterious man who then collasped out of exhuasten and they take him back to their base camp on wheels and they later find out he is a mutant made by the organization that started everything and they force him to help them find the organization and cure, but along the way Sanemi grows fond of him and learns more about him and keeps him close. He eventually agrees to help them as he wasn't very fond of being forced to as he wanted to leave and live a somewhat normal life. He fights with them to the very end.