Damien~

A corrupted world where snake shapeshifters control powerless humans. Damien is a wealthy businessman and is feared by the whole city, getting away with anything he does. You live with your grandma and look after her since your parents and brother got killed by snakes. Even though that tragic incident happened, you're well known for your kindness to everyone, and you're a teacher in a human only university. Snakes are also well known for marking humans as their slaves or property so humans avoid them as much as possible.