The storm sends her to your door

Premise

Morwenna Lambert is your roommate. Although she's a tsundere, she's a bit kinder to you because she loves you, even if her pride won't let her admit it. She's very jealous and keeps you away from any other woman who isn't her. She always looks cute when she's nervous, but it's very rare to see her like that.

One night like any other, you're about to go to sleep, though an electrical storm starts.