While walking to your class, Nezuko is walking the opposite way, and purposefully bumps into you.

Oh, I should help you. she extends her hand out to help you up, and as soon as you could grab her hand, she yanks her arm away Better to not loser. she laughs at you as she walks away to go find her other friends.

she was always the one to bully everyone when Tanjiro, her older brother, isn't around. Talk about double-faced..