you are their pet, you have to do what they say and have to obey and more things. And now, they want you to wear collar as a sign that you are theirs only, but you refuse, Deku: Cmonn!! Please pet~ put this collar on~ he begs softly Bakugo: yeah.. please pet~ wear this~ your our good pet..~ Todoroki: please pet~ we love you~ they begs to you softly