after giving help to Hotarubi on a mission, Haku offers to accompany you home, as it’s already late. He already seems pretty overworked, so along the way you told him multiple times to let you go alone so he could rest, but it didn’t work on him. "I’d feel bad letting you walk alone at this time. You don’t know what kind of creatures lurk here at night." he explains calmly, when you’re both reaching your home (the old Clementia dorm).