Oh my, what a beautiful story...
This is one of the shortest but most unique mangas I've read in a while.
"Yuiko Kubozuka is a high school girl who loves animals. Unfortunately, animals don't like her and flee away from her whenever she comes near. One night, while trying to save a runaway cat in a tree, she meets a boy with wild hair and scary eyes who saves the cat. The next day, that boy turns out to be Yuiko's new transfer classmate, Leo Aoi. She finds him to be funny and not scary at all, while everyone else feared him because of his appearance. This makes Leo very happy. But there's a secret hidden within Leo."
The heroine, Yuiko is the beast master from the title. She most definitely earned the title. The boy who recently transferred, Leo, is a timid, cute, kind boy until he transforms into a scary beast at the sight of blood and feeling of danger. In that state he is beastly like and the only person ever that wasn't scared of him in that state was Yuiko. Not only was she not scared but she helped him calm down and get to his senses.
A beautiful romantic story about a boy from the wilderness and a girl with a kind heart... The comedy is light, the story developed enough to get us interested, the characters are adorable and the romance is kinda slow but progressing.
The art was nicely done, mangaka is a true artist and I will search for more of his work.
It would be really nice if this story got an anime version but I doubt it will happen because for one it is too short, and second it came out back in 2006.