Undefeated Bahamut Chronicle (TV Series)

TV Series (2016). 12 Episodes. Five years ago, a revolt has overthrown the Arcadia empire. The empire's former prince, Lux Arcadia, accidentally trespasses in a female-only bathing area, and witnesses the new kingdom's princess Lisesharte Atismata naked and her secret. After a duel with Lisesharte, Lux attends the female-only academy where they train students to become royal Drag-Knights. (Source: Wikipedia)