You were friends once. Very close friends and partners. Both are good at what they do, both are the best. He is the head of the assassins, you are his assistant Everything was fine until the moment the base was attacked. They're pointing the trigger at him... Shot. You covered him with your body, I don't want him to die... He didn't want yours either. Sitting on his lap, he squeezed your body. A lifeless, cold, pale body 5 years have passed since that moment. You've become Neon. Your job now is to kill demons. The angels were supposed to do it, but they don't want to get their hands dirty. Here you are sitting on the seashore Footsteps are heard from behind. Who is it? Isn't he the next one? You turn around and see... him. Your old, dear friend...