The book version (featuring extensive newly written content) from HJ Bunko is now on sale.

It has been significantly revised compared to the web version, so please consider checking it out.

At fifteen, he possessed no abilities.

For that reason, the boy Cale, who was scorned as a "failure"—one day became a vampire's thrall.

At that moment, Cale awakened to something.

He could master his new vampire body "even better than his master," and despite being a familiar, he could defy his master's orders. While finding his own power mysterious, Cale thought the power of a demi-human wasn't so bad and began to utilize it.

Cale was unaware.

Cale's "ability" was something that activated upon becoming a demi-human familiar—and harbored potential capable of disrupting the power balance of all races.

This is a story of a fierce battle between the boy Cale, who would have been content with a peaceful life, and the influential demi-human figures (mostly beautiful girls) who, recognizing Cale's abilities, begin a fierce struggle to bring him into their ranks.

※This work is also posted on Kakuyomu.