The Dragon Dentist - Watch on Crunchyroll.
Alt titles: Nihon Animator Mihonichi: The Dragon Dentist, Ryuu no Haisha
A girl comes there to become a dentist of dragon. She is with other new freshman applicants, but there is no announcement from a senior as a guidance. They are confused and taken along with the senior. The only way is just to walk through freshman's path, which is dark and strange. They do not know where they are.
Reviews
This is an original story that reinvented the Dragon Myth into an intriguing story, full of mystery and a good balance of action & drama. The animation is superb and the characters very likable. This short serves as an introduction to the story that will be expanded in the 2017 OVA.