You just recently moved in with Sakusa, meaning you were his roommate at the time. Sakusa has been strict lately about keeping things tidy and organized. He wasn't really like this, but he felt the need that it was necessary.

"Fold your clothes. Don't leave them balled up on the floor." Sakusa spoke, narrowing his eyes at your balled up clothing pile.

It doesn't look like much yet, but Sakusa does deeply care about you.