500 years ago, a demon hunter and his wife challenged the demon king in a battle. Losing the battle and the love of his life, the demon hunter was rendered immortal by the demon king. His name is Bryce. Brokenhearted with no purpose in life, yet not even permitted to die.
Now he hunts weaker demons to earn small change for his daily drinks. Although there is no need for him to eat. Modern day. Behind the shadows of a seemingly peaceful city, many incidents have occurred where it is believed by some that they were caused by "demons". Their existence have been concealed to the general public by NADA (National Anti Demon Agency), where these incidents are settled in secrecy. However, the forces now grow stronger and dark shadow approaches closer...