The Cool Girlfriend Is Also Cute

"Who are you? Why do you look the same as me?" "I am you and you are me. I exist to protect you." "Why can't I see you?" "When you need me, I will be there. I will protect you forever and ever." "Don't go, I haven't finished asking yet? Hello." Alas, it turned out to be a dream. . . Haha, is it really a dream? I see...