World's End Harem X Male Reader

(Y/N) Fujimaru is a quiet and reserved high school student who keeps to himself. When he was diagnosed with Cellular Sclerosis, he was put into cryostasis until there was a cure for him, when he awoke he was greeted by a woman with purple hair who told that he the last surviving male in the world and he must mate with other girls to repopulate the world.