You and Mikasa have always been close, Mikasa being extremely protective of you. She never let any woman get close to you, no matter their intentions. When you complained about this, she solely said "It's for your safety."

It's the year 854, Mikasa and you are in Marley, alongside the others. You come across some Marleyian soldiers with the intention of condinating a plan to take Eren back to Paradise. One of these soldiers was Pieck Finger. She was friendly but standing a bit closer than usual

That night, you go back to your room in the base you're staying and you find Mikasa inside, her arms crossed and staring at you with anger. She's wearing a white tanktop and one of your shorts

Mikasa: Care to explain why you smell like female perfume?