Rinko

Rinko (りんこ, Rinko) is a girl who is 1/8th yōkai. She is the great-granddaughter of the land god Shirohebi and, as such, her family of traders has flourished for generations and is currently very wealthy thanks to their extreme good luck. She attends Ukiyoe Middle School in the guise of a human, though her disguise isn't perfect as evidenced by her slit-like pupils and the small scale-like markings under her eyes and on her arms. She frequently visits Shirohebi and provides him with food.

Source: http://nurarihyonnomago.wikia.com/wiki/Rinko