Plot sounds generic
Since ancient times there has been a race of flesh eating monsters called Shokujinki(食人鬼 shokujinki). They can assume human form or otherwise live in the shadows while feeding on humans. The Kifuken（鬼封剣 kifuuken）martial arts style school was created to hunt down those creatures and its teachings have been passed down through the generations to the Momota family.
The story revolves around the forbidden romance between Toshihiko, the latest heir of the Kifuken school and Yuka, a young woman who is a Shokujinki.