Given it hypnotized the guards, maybe he broke out of a lighter mental distortion after realizing its true identity? Then after his head cleared up, noticed the yandere waifu's mana in whatever direction?The direction it headed? I though he was lost?
"I should go into the forest alone to help this random person despite there being adult guards!"Avoiding death flags
Not helping other nobles at any other point in the story
“My friend seems possessed by a demon”
“Seems like the job of 10 yr old me to solve. Everyone stand here while I go ALONE, surely nothing will go wrong, right?”
I swear this and the soloing his entire village at 10 are actively making me lose faith in the story