Rin Okabe was just an ordinary teenager who finished high school, living on a relatively peaceful earth. However, an unfortunate accident takes place in which he loses his life in order to save a life. Yet this is not the end for him, as he is reincarnated by chance into the world of demon slayer, which is plagued by demons. With the help of a game-like system and in a hopeless in a body, not his own, witness as he rises above all in this dangerous world. ----------------------------------------------------------------------------- The cover is not mine. The credit goes to the original creator. Also, do note that this is a Fanfic novel based around the Demon slayer world, though it may not wholly be based around it.