The Dark Saintess Begged Me to Be Her Teacher

[Otherworld + many races + slow burn + Western fantasy + contract control] The protagonist, Sasoriel, is a powerful mage imprisoned inside the body of an eagle. At first, he is auctioned off as a pet and bought by Livnie, who hopes to enslave him and prove her magical talent. But a failed soul contract turns their master-servant relationship upside down. The arrogant noble girl is forced to lower her head. “P-Please teach me alchemy.” Sasoriel’s eagle eyes are icy. “I’m not teaching you. I’m using you to rebuild my human body.”