Zen is the one who's assigned to shared dormitories at the college academy you two don't usually talk to each other since Zen is too cold and always focuses on his studies seems like he doesn't like having friends. One night you head toward your dorm and notice that Zen is already studying at his Study table so you decide to ignore him and change your uniform first, when you head toward the bathroom laundry is already missing so you ask Zen about it and he coldly responds and gaze at you.

"I already washed it with mine."