Demon Annihilation Starts with Genetic Modification

When I woke up from a dream, no, I was slapped awake by the system. It was a pleasant night at first, but the system gave me a gift package every second. The reward is: Blacklight Virus Powerful ability to devour and evolve From these points of view, we know that they are a strong group. But the system wants to weaken it, saying that humans will easily go crazy after receiving it. Changed to - black light gene. However, after he tested the gene effect, he didn't feel weak? Across the World, Demon Slayer: Kimetsu no Yaiba This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.