Eight years after Wulian City disappeared, Kawahara fans once again became the inevitable prey of both Heiling City and Chihe because of the blood of Kawahara Mansion flowing in their bodies. The key that fell at his feet in the dark night, Kawahara fans boldly picked it up. There is a door in the future that will be opened by this key. And will the person inside the door be the one waiting for Kawahara's fans?