The world is full of vampires. Supernatural creatures who drain the blood from humans without mercy—fighting such beings is the foundation of Isuzu Osaka’s life. But humanity is losing the war, and so desperate times call for desperate measures...And so, Isuzu sets out to strike a deal with a powerful vampiress whose beauty drives all who gaze upon her insane in the hopes of protecting his friends...

To wipe out the wave of vampires terrorizing Japan, Isuzu teams up with Baroque, the legendary vampire slayer, with a goal of casting a curse on a massive scale. But while conducting their assessment, the two encounter a pair of vampire girls, and in the midst of battle one of them takes a special liking to the taste of his blood...

After a grisly murder takes place at a local high school, the victim is found to have had contact with a vampire pretending to be Baroque. With the faculty blocking attempts to investigate, Isuzu and Baroque go undercover as teacher and student to infifiltrate the school...but they didn’t anticipate the fake Baroque showing as much interest in Isuzu as the real one! Caught in a tug-of-war between two vampires, can Isuzu maintain his cover story and catch the murderer?!

Baroque’s curses sweep across Tokyo as the large-scale vampire extermination commences. Merciless monsters across the city fall one by one, and it seems the strategy is a success...until the arrival of Tsukuyomi, a deadly vampiress with a mysterious power over Isuzu. Mad with love, she seeks to steal him away—much to the irritation of Baroque and Lapis. With vampires laying claim to Isuzu on all sides, can he fifind a way to disentangle himself from this blood-soaked love triangle?

The large-scale vampire extermination using Baroque's curses has begun. As the merciless vampires fall one after another, it seems the operation is a success...until the arrival of Tsukuyomi. Mad with love for Isuzu, she uses a mysterious ability to control him like a puppet. Desperate to stay by Baroque's side, Isuzu tries to resist, to no avail. The curtain rises on a deadly battle as vampires on all sides lay claim to Isuzu's heart...!

Isuzu’s past has always been shrouded in mystery, but it seems his amnesia is hiding more than he ever imagined! As the manipulative Tsukuyomi seeks to replace Isuzu’s current personality with that from his sealed memories, Baroque and Lapis prepare to launch an assault to rescue him. Just where will this action-packed vampiric love triangle lead?!

Ouka Namae, a magician's pupil, is incapable of feeling emotion. That is...he's almost incapable. There is one particular circumstance when his feelings rise to the surface, but the scenario that unleashes them is too dark to even contemplate...