The video reveals character Fai (Fai Fai, spelling not confirmed), voiced by Ari Ozawa.
The official website for Studio Gokumi’s original television anime Endro~!
She has a habit of going berserk and attacking her friends by gnawing on them when her hunger reaches its limit.
Namori (Yuruyuri) is the original character designer, and Haruko Iizuka (Sisters of Wellber, Tamayura, Children of the Whales) is adapting the original character designs for animation.