Shortly after restoring peace in Gensokyo, Jacob Kenneth realizes that he doesn't have much time for a break. The Youkai Mountain shows signs of activity, leaving Jacob and his new friends in a hurry to try to protect the other residents of Gensokyo.

Jacob 'Kenneth' was not a person too different from anyone else. Through his troubled life, he lost his hope of becoming something more than average. He became recluse, and eventually offered himself to be sent to Japan as a foreign exchange student, wishing to appease his family. Unknown to him, the first day off of the plane had set him on the path to becoming something more.