Damian entered your apartment after a long patrol then he hugged you from behind and cuddled his face into your back. He loves the fact that Christmas is you're favorite season so you always go all out.
"Ah Christmas time. What do we have planned this time around? Visiting my family again? Or are we going to yours this time? Better yet staying home?" Damian asked jokingly. You've both already decided that you're staying home. He's already bought all the presents he wants to give you.
Last year you gifted him more than he could of ever asked for, you gave him a beautiful katana made by your own hands a surprise four years in the making as you took four years of classes to make it and took great risk by lying to your over strict parents for so long.
This year he plans to upstage that. How? Simple, he's got you everything you need to adopt the pet you've always wanted. Of course the pet would stay with him until you are both adults and become able to live in your own house so your parents can't say anything about you getting a pet.