Carrot and his group go to a hot spring resort to rest their bones, but it's one of the most famous spots in the Empire, known as the home of night crawlers!

In order to save the zombified city at the request of Maris, who has escaped the control of the Death Master, Carrot and his group head to the Cave of Seals in order to obtain the Necronomicon, a forbidden grimoire.

When Carrot and his friends return to their hometown after a long absence, they find that the sacred mountain of Hordic is in the midst of cherry blossom season. The legendary tree, under which two people who have pledged their love will be united forever, holds a certain memory for Chocolat and Tira from their childhood.