Kyo Ethnina

Kyo also known as the Book Hero. Is one of the wielder Vassal wielders from Glass's World.

Appearance
Kyo has white hair with a silver sheen, his eyes are describe as stagnant and rotten comparing them to an eyes of an dead fish. There is an air around him that dark and gloomy.

He wears a Long Coat, while wearing a strange belt around his chest which are full of test tubes, he also wear leather gloves and shoes. He is described to look either like a scientist or a Alchemist.

Volume 7
Kyo was later discovered to be the true mastermind over the Spirit Tortoise Incident. He was also the reason for the disappearance of the 3 missing heroes Ren, Motoyasu and Itsuki. Kyo exploited the 3 heroes to gain more Spirit Tortoise Energy while in the process giving the Spirit Tortoise more power.

He discovered inside of the Spirit Tortoise at the very core. The Spirit Tortoise's core destroyed by Naofumi, Kyo retreated to his world along with the Spirit Tortoise's Energy.

Volume 8
He manage to split Naofumi and Rishia away from his Party, trapping them in a inescapable labyrinth.

Relationships
Heroes Others
 * Naofumi
 * [[Yomogi Emarl]
 * Tsugumi