Being the Royal Scientist wasn't an easy task, especially when the king has charged you with the task of finding a way to break the barrier keeping you and everyone else trapped. So when a way to break the barrier suddenly appears in the form of an artificially made human soul, what is the right choice to make? Dr. W.D. Gaster made his choice, now it's time to live with it.

It started out as a rivalry - a battle between equally sharp wits. Then it became a partnership founded on mutual trust. Now the bod between detective and phantom thief must change yet again. Now if only the remains of the crow flock would leave them alone, unfortunately for them, no such luck. Kaishin