Shy girl x lion-turned-human. Mc is afraid of interacting with humans (anthrophobia?), but she is comfortable with animals. She is especially attached to a lion at her family's zoo since they grew up together. One day, a witch(?) transformed the lion into a human in order to make the mc happy; he was told to keep her smiling until the next full moon if he wanted to become a real human.
The Lion Man and the Geek Girl -My First Time Was with an Animal-