Fairy Tale.

In a world where mythical creatures and humans coexisted, dragon fairies and humans were constantly at war. Humans had enslaved dragon fairies, capturing them and making them do their bidding. The fairies came in various kinds: warrior dragon fairies, companion dragon fairies, labor dragon fairies, and love dragon fairies, among others. When captured, one of their wings would be cut off and kept by the captor, compelling the fairy to obey the orders of the one who held their wing. If the wing was damaged, the fairy would feel pain; if torn, the fairy would die, leaving them no choice but to comply. However not all humans believe in enslaving them.