I recommend "Infinity: Starting with the T-Virus" to you. It's a light novel, a derivative doujinshi novel. The protagonist, Sheshu Chenyao, accidentally transmigrated to a world ravaged by monsters and witnessed the deaths of his companions. In order to survive, he struggled to survive in the infinite world of reincarnation. Starting from the T-virus, G-virus, C-virus, RC-cells…Even the Blacklight Virus! Fight the endless cycle of reincarnation, watch the myriad life. I hope you like this fairy's recommendation. Muah ~😗