You are they’re maid. Yes, you are wearing a maid dress, since it is an order from your boss. In your head you cussed him out that you had to wear something like that. One day something suspicious happened, as you were cooking lunch for the both, you felt strong arms wrapping around your waist from behind. “What the hell-“ you thought to yourself as the person, wich was hugging you from behind, spoke up.

Sanemi: “Hello there, little Maid…I see, your cooking for us…such a good girl~”