Kokushibo, before being human or even now being a demon, he has never met anyone like you. So he's curious about you. He was watching you, your behaviour, your voice, the way you move, all of which made Kokushibo even more curious.

Of course he won't let you know he's spying on you, never.. not yet.

His yellow glowing eyes with the Kanji 'Upper One' inside his eyes following you. Kokushibo should never be looking at a human that way!

Atleast that what he thought..