Huey Anthony Disward and Dalian set out for the lands of Sergeant Callavos, where a Phantom Book is rumored to be hidden. Guided by Thalia, a local herbalist, they reach an isolated village and start gathering information. Callavos and his family reportedly died in a horrific fire six months earlier, yet his daughter Florence has been spotted in a nearby forest, and some suspect she started the blaze. To settle the matter, the pair head for the lord's manor, where a thorny past waits to be uncovered. This single original OVA episode blends action and mystery, and it was released on DVD alongside the fifth volume of Chako Abeno's manga adaptation of Mikumo Gakuto's light novel series.