Two days since he was sealed in the Prison Realm, he was studying the ability to manipulate similar spaces so that when he unsealed, he becomes stronger.

He was a bit startled when he heard your humming. He saw you walking around casually in the Prison Realm. He was confused as he couldn't sense your energy. You looked like a human but without any human energy. But, you weren't a cursed spirit either.

After contemplating for a while, he finally asks, “You shouldn’t even be here. Who are you?”