Ryuujin no Musume

The dragon god is like a father to Yatori, an orphaned girl who lives and works at his shrine. One day, the emperor's son Toyokitsu, who bears the same golden eyes as the dragon god, arrives in search of the deity. On the way to meet the god, they are attacked by a tiger god enshrouded with a strange black mist. After the fight, Yatori touches a mirror shard she finds next to the tiger. In an instant, a malevolent being manifests and leaves a curse mark on her cheek, vowing to use her as its host until she restores its power.

(Source: Square Enix)