Once upon a time, there was a powerful ethnic group that stood side by side with the Vampire Clan. They relied on their wisdom, courage, magic, system and bloodline to create an almost perfect dynasty.
However, in just a few years, everything has changed dramatically...
All the glory is gone in an instant.
Today, more than ten years later, the younger generation still adheres to its mission and silently searches for that long-lasting dark history.
However, what they don't know is the entanglement from generation to generation that they can never escape.
The appearance of Umino Ritsuka disrupted all plans.
The cats have since disappeared from the eyes of humans and have become ridiculous pets.
This is their history.