Kaguyahime

This girl has rabbit ears and calls herself Kaguyahime. She declares that anyone who touches her ears will be cursed by the Moon. Occasionally, she may quote the famous line "On behalf of the Moon, I shall exterminate you" and makes you wonder whether she is really a goddess or not. While her appearance looks like a cute girl, she enjoys pranking others and lying. After her arrival at the Mahjong Soul Shrine, she started to battle for the ownership of the shrine and the rivalry between her and Ichihime got really intense...

(Source: MahjongSoul Wiki)