Monokuro Shounen Shoujo

From Midnight Scans:
Kureha Mimachi, a 15-year-old girl, has just transferred into Shiritsu Kenhono High School. However, there is something weird about this school, it is actually a school where the Princes and Princesses of the beast-kind go to…?!
Even though Kureha is human, she is there as a way to help the students their lives peacefully with humans and has the role as the “rabbit”. Will she be able survive without being eaten by the students…?! Only time and her hidden bodyguards will be able to answer that…
Note: Based on the oneshot released in 2008, it became a series in 2009.