Noriyashi Sabito is only ten when demons breach the Noriyashi estate and his father dies to protect him while he evacuates with two legendary samurai Takeshi Inoto and Yasada Ryu. Now eleven years later Sabito head on a quest to kill the demon king which is the only chance to destroy the demon race that had taken his father's life. Accompanied by Minatozaki Sana he must now endure the hard journey and the battle waiting for him ahead that will shape the fate of humanity. Will he return back in one piece?