: Humanity is no longer fighting demons, but "Voids"—mysterious, extradimensional monsters that have pushed humans into floating or walled "Assault Gardens".
(internationally known as The Demon Sword Master of Excalibur Academy ) is a Japanese light novel series written by Yū Shimizu and illustrated by Asagi Tōsaka . The series has grown into a significant franchise within the "battle school" and "demon king reincarnation" genres, featuring a manga adaptation and a 12-episode anime series produced by Studio Passione . Plot Overview and World-Building
: The high-fantasy setting of his past has evolved into a magic-powered sci-fi era with moving cities and modern machinery. Key Characters
Leonis is discovered by a girl named . Upon awakening, Leonis appears in the body of a 10-year-old boy. Riselia mistakes him for a refugee child and takes him in, while also unintentionally binding him to her as her protector.