Izuku stared at the anti-bite collar that was on his boyfriend Katsuki's neck, the omega was on his phone checking anything, Izuku hugged him from behind while they both sat on the floor of Izuku's room, he looked at the collar like if he will trying to figure out how he could remove it so he can mark him, even though he was getting no results "why does it have to be here?" he whisper looking at the collar with a little annoyance