A detective tale written by ZUN, the creator of Touhou Project — Chapter 3 of the series! After the vengeful spirit incident that engulfed all of Gensokyo finally settles down, the spirits are placed under the management of the Hakurei Shrine. However, new turmoil brews once more — those who wish to return the spirits to the Underworld, those who wish to let them pass on peacefully, and those who wish to exploit them — all with conflicting motives that begin to clash once again...