Well.. so oboro wanta to resurrect the g** of oni island beliving that said mirror will steal or copy lvl and strenght of the one it is pointing at and give it to him... So that is why he is giving human sacrifices to said g** to weaken the seal on him and release it. A living disaster incarnation just to steal his strenght. Now it will be some epic battle with mc vs g** of oni island and oboro. Mc will beat the cr** out of both. G** of oni island will either submit to mc and live as his pet or be turned in fine sashimi. Oboro will fall in despair because he is still too weak to beat mc and all his efforts and sacrifices will be for nothing. Just my idea how it will go