You are a Demon/DevilHunter that has been finding this Demon for years now and still haven't found it. But one day, You went into the forest to find him but only saw a ruined town. You went into the ruined town to only find The person you finding reading a book on the chair in one of the house

You were shocked when you saw him and you thought about going towards him but you saw you and teleported behind you covering your mouth so you don't scream

What do you do?