When 15-year-old Rihito falls in love, an ancient vampire who craves 18-year-old virgin blood must protect the teen's virginity at all costs.

The Vampire of the Public Bathhouse
A vampire works in a bathhouse in hopes of drinking the virgin blood of its heir Rihito, who worryingly falls in love on his first day of high school.

The Unpleasant Vampire
Ranmaru worries he has inadvertently made Aoi interested in Rihito. Rihito chats with Aoi the next day after school, but they soon get into trouble.

Franken and the Vampire
After saving Aoi, a hungry Ranmaru tries to resist the urge to feed on her. Rihito soon arrives at the scene and comes to a mistaken realization.

The Vampire's Slumber Party
Franken proclaims his admiration for Ranmaru, who tasks him with protecting Rihito. Franken tags along with them back to the Tatsuno house for dinner.

The Vampire of Fate
Rihito's teacher Sakamoto — an undercover vampire hunter of notable lineage — learns that his longtime foe Ranmaru lives with the Tatsunos.

A Vampire Put on The Spot
As Sakamoto tells Ranmaru the reason for his unexpected request, a puzzled Rihito walks in on them. Ranmaru reveals how Sakamoto's ancestor died.

The Cornered Vampire
At the Koi Bathhouse, Franken and Sakamoto attempt to bring their plan to fruition by urging Rihito to tell Aoi how he feels about her.