Rihito Tatsuno

Rihito is the 4th generation of the Koi Bathhouse's owners, and has lived with Ranmaru Mori for the past 10 years. He sees Ranmaru as a trustworthy individual within his family and takes his claims of being a vampire as a joke. He has a simple and honest personality, and his naivity and purity make him appealing to Ranmaru. However, that purity is threatened when he gets a crush on Aoi after meeting her on his first day of high school.