A Vampiric Locked-Room Fantasia

Vio Valakia, a weak and cowardly vampire on the run from a horrific pair of hunters, comes upon a ghastly sight: in a delapidated forest storehouse locked from the inside, a young girl lies stabbed in the back, inches away from death. With no other recourse, he sinks his teeth into her neck, saving her life by turning her into an immortal monster.

Forming a momentary truce with hunters, the vampiric sleuth and victim must come together to solve the locked room mystery, all while bearing the weight of their impending extermination. Just what answers lie beyond the forest, in the tiny, isolated village of St. Purgatorio...?

The Way to Kill a Vampire

One year after the events at St. Purgatorio Village, vampires Vio Valakia and Rafflesia Valpurga receive an invitation letter to a curious gathering.

Eight influential vampires meet at the manor of one Fafner Belial Nachtheim, a mysterious bloodsucker who claims to have lived for over eighty thousand years. With its master nowhere to be seen and surrounded by a cursed forest that only those with an invitation may cross, the Homesick Manor is overtaken by a creeping madness as the impossible occurs－those who should be immortal begin turning up as corpses.

Were the words inscribed in the letter true? Does it truly exist－a way to kill a vampire...?

A War of Reasoning

In a certain nation embroiled in warfare, during an Arms Parade meant to boost morale, an inexplicable enemy attack is conducted. Smoke covers the stage, and moments later only a gruesome display is left: the scorched bodies of the soldiers, the attackers nowhere in sight.

The brass, at a loss and suspecting treason, sends out the 49th Investigative Team―better known as the Rat Squad―headed by Captain Tokiji Urota, whose fiery determination won't let her rest until every party involved has been brought before the firing squad. Things don't get any easier for her, however, as the case keeps spiraling deeper into the heart of the military―and every time it does, it seems to go according to the predictions of a certain treacherous soldier, sneering from behind his prison bars.

Nothing Ever Stays The Same...

In the eleventh century, in a secret castle bereft of guards or servants, five knights of a hidden order gather, awaiting the arrival of their missing leader. One by one, they die in inexplicable locked rooms, assailed by the fear that one of their brothers in arms might be a traitor. Kept awake by thunder, Dame Eresia Versa leaves behind a record of the mystifying case.

In the present, an overly beautiful young man claiming to have an answer to the mystery of the past heads to that very same castle from all those years ago...

A classic mystery's sweet-toothed redux!

A century ago in London, a certain group of amateur sleuths known as the Crimes Circle met its match against the unknown mastermind of the so-called Poisoned Chocolates Case, an affair tangled like a spiderweb whose apparent simplicity belied its true depth.

Flashforward to modern day Japan―the Crimes Circle is back in an unexpected form. Tokiwa Private Academy is a school for the youth's elite. Among them exists an unofficial gathering of eccentrics, fascinated by the dark world of criminology―when this bunch find themselves embroiled in an affair endlessly similar to that which their forefathers had been stumped by, they have no choice but to try their hands―and heads―at solving it. And in classic fashion, they'll take turns doing so!