Undefeated Bahamut Chronicle

is a Japanese light novel series, written by Senri Akatsuki and illustrated by Ayumu Kasuga and Yuichi Murakami. SB Creative published twenty volumes from August 2013 to August 2020 under their GA Bunko imprint. A manga adaptation written by Itsuki Watanabe, with art by Fumi Tadauri, was serialized by Square Enix and GA Bunko's online magazine Gangan Online from July 2014 to May 2018. It has been collected in eleven tankōbon volumes. A 12-episode anime television series adaptation by Lerche aired from January to March 2016. Plot 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. Characters Lux is the seventh crown Prince of the Arcadia Empire, which was destroyed in a revolt five years prior to the start of the series, and nicknamed "The Weakest Undefeated Drag-Knight" due to having never lost a fight (all his fights end in draws). He is later revealed to be the dangerous and mysterious "Black Hero" who destroyed 1200 drag-rides of the empire during the coup d'etat and single-handedly ended the war in the process. He wields a Wyvern Drag-Ride and the Divine Drag-Ride "Bahamut". His mother died in a carriage accident when he was young, and the people refused to help him out of resentment towards the Royal family, with only Philuffy showing him kindness. He failed to reason with his father the emperor about the people's suffering, and his older brother Fugil convinced him of participate in the coup to protect Philuffy, only for his brother to betray him by killing the emperor and the royal court, leaving him and Airi to pay for the debt towards the old kingdom. He is also engaged to Krulcifer. One of the four heroines, called "Lisha" for short. Nicknamed "The Scarlet War Princess" and wields the Divine Drag-Ride "Tiamat". She is the princess of the Kingdom of Atismata. She duels Lux over his freedom after an incident in the academy's bath and after he saves her life during an attack from an insurgent group, she falls in love with him; she blushes anytime she's around him and gets jealous when other girls get close to him. She is the first person in the series, besides Airi and Fugil, to learn that Lux is the legendary "Black Hero".