Let me make this clear. None of Drakos' summons were taken. Silver used an illusion power and controlled Drakos' older sister. Asura wasn't on school grounds.
So I would say no NTR happen unless you imagined it. Put simply MC was just teleported and tricked with a hidden power from Silver. Idk else what to say. So this is being temporary dropped with a new reboot coming out today and it will be put as restricted to block out the trolls and spammers. If you want to review then actually write a proper one. I am not offended by any one of those reviews, I couldn't care less. The reboot will have the fixed chapter 14 and new chapters coming. I can't please or explain everyone. Hope the reboot will change your opinions on the story.