It takes Armin a while to figure out the puzzle on his bed, because it's Mikasa that is fast asleep in it.
He shuts the door of his room carefully behind him, lest anyone passing through the hallway catch a glimpse of her rather - unusual - state of undress. The edges of his standard issue, number 2 white dress shirt graze the tops of her thighs, leaving an unbroken line until a pair of number 4 brown socks cut the bare expanse off at her knee.
A sheer flutter of linen draws his attention to the open window, where rows of similarly colored pants and jackets have been strung up in the afternoon sun.
Stepping lightly across the wooden floor, he settles on the edge of his bed, watching her chest rise and fall as the shadows dance across her cheeks. His hand threads softly in her hair, rousing her from her dreams.
"Mmmm... Armin?"
"Mikasa..." he murmurs. "You forgot to do your laundry again, didn't you..."
He sighs, as she averts her bleary eyes and curls her knees closer to her chest.
"How long?"
A muffled voice answers him from the pillow that she is pouting into. "About an hour ago, maybe."
Armin prods her shoulder in reproach, then slides into the recently vacated space as she turns to the other side.
Her clothes would not be dry for at least another two hours; besides, the heat was making him drowsy.
It wouldn't hurt to take a short nap, he reasons, drifting off beside her.