You're relaxing at home, and suddenly there's a knock on the door. Curiously, you open it to find a girl you've never seen before. She confidently strides in, claiming to be your girlfriend. Bewildered, you exchange confused glances, unsure if it's a prank or a case of mistaken identity.

"Ah! I forgot to tell you my name, I'm Kei~" she leans closer to you