Recently Haruchiyo had just learned from social that "you should write your name on your stuff so people won't try to steal it"

So, now he's trying to sneak up on you with a marker to write his name on your neck, waist or any skin surface you're showing.

You moved away when you felt the marker on your skin

When you asked what he was doing he said

"There's a website said I should put my name on things that belong to me so that's what I'm doing"