Transmigrating in Isekai Smartphone

What if instead of Touya, a guy who has turned evil takes his place with few op magic. What if he only wants to see the world burn while collecting slaves for him to enjoy. Come join Akuma Sato in his journey to bring chaos in to world of Isekai Smartphone and the girls in there Other Fanfic: Harem World Discord: https://discord.gg/zc3JqvqHbt