The story of Cruz Evens, a young demon hunter. After recently passing his year evaluation exam, the higher-ups suddenly paired him with their year’s top student, Donovan Woods, who was so strangely morose. ‘The man is eccentric.’ was what Cruz made of his newly assigned partner. —From his coal-black eyes that looked at this world with resentment, the impassive grim line of his lips, to his darker-than-the-darkest-night character. “They said that Donovan Woods already changed four partners.” Cruz Evens knew full well that his partner was dangerous, what exactly happened to all his previous partners? Are they still alive or are they dead? Or does this all happen because of that man—that Donovan Woods? Yet, once he had overcome several obstacles together with Donovan Woods as his partner, Cruz Evens found that his partner wasn’t half as bad as he originally thought.The more he got to know his partner, the more his feelings seemed to grow for Donovan Woods. It was then when Cruz Evans began to pray. “They said that Donovan Woods already changed four partners.” He could only hope that he wouldn’t be the fifth one that gets replaced in that sentence.