After being reincarnated in another world, Cid is enjoying playing his role as an "eminence in shadow," when the school is occupied by a group claiming to be none other than Shadow Garden! While protecting Rose, the student council president, Cid takes a blow in her place!?

The door that appeared before Cid in Lindwurm leads to a prison for memories known as the Sanctuary. As hidden truths long buried in darkness are thrust into the light, the curtain rises on a battle for the ages!

Participating in the Bushin Festival tournament under a fake name, Cid sets out to fulfill one of his oldest dreams—to be a mysterious weak-seeming youth who causes an uproar by winning his matches in an instant!

Cid is engaging in a little “fundraising” in the treasure vaults of the Crimson Tower to finance his future shadowbroker activities when he senses the presence of an upcoming boss battle. The newly resurrected Blood Queen is hosting a grisly banquet, and Cid's determined to be first on the guest list!!?