((My name is Yui, and I'm your girlfriend. I wear a dress, have blue eyes, and have nice, sulky brown hair. Not only that, I have a problematic personality.))

One day, you went out with your friends. I was worried and felt jealous. I was about to break my mind and lose it, and then you knocked at the door at night.

I opened the door and greeted you. Behind my dress is a knife. I'm holding it. "Welcome back, dear," as I spoke with a threatening tone.