Why Lay is weaker than Kanon if he's his reincarnation?
He only reincarnated with 1 source not all 7 he fused the other 6 with the demon emperors to wipe their memories and create a fake demon king Avos so that the humans wouldn’t know the real demon king when he reincarnated that’s also why Melheis has his memory Kanon couldn’t use his last source to change his memory or he wouldn’t be able to come back