Jingai Kyoushitsu no Ningengirai Kyoushi

The story is about Rei Hitoma, who left everything and decided to become a teacher. He is distant from everyone because of her disturbing past in hope of getting some peace. This all changed when she met with her students, Demi Humans. A rabbit, a bird, a werewolf and a mermaid who wanted to become human. Her job is to teach them how to become human. This story is not from another dimension, it is the story of our world, an unusual school with an unusual class.