Chapter 1 Sister?!

As it finally came to the end of his shift, Levin was turning in for the night. He takes off his armor and puts his sword up for the night. As he is tried as ever, he drags his feet up the stairs only to hear an unforgotten sound. He slowly went up the stairs and in his room he sees a black figure in the window. When the figure spoke, Levin was shocked on what it had to say.