Ginunhive

Ginunhive (ギヌンハイブ, Ginunhaibu), also known as the Gladiator Island Ginunhive (剣奴孤島ギヌンハイブ, Kendo Kotō Ginunhaibu), is a large island located in the southwestern part of the Sacred Vollachia Empire. It is where many of the Empire’s criminals and slaves are forced to become gladiators.

History
The Gladiator Island has been active for at least four centuries. In the distant past, Reid Astrea visited Ginunhive for an extended period of time and achieved 6,000 recorded undefeated victories. Another individual known as the Gladiator King visited the island at one point in time, and he became heralded as a hero. A statue and a custom-built replica of his helmet were eventually created and displayed in the island’s Colosseum.

Around seventeen or eighteen years before Subaru was summoned, Aldebaran was sent to Ginunhive, where he would stay for over a decade. During Al’s tenure as a gladiator, he lost his left arm. Coincidentally, a man named Null once put a cloth over the wound of a gladiator who lost their arm, which eventually allowed him to officially act as a healer in the island's healing room, despite still being enslaved. Around five years into Al's stay, a man named Ubilk was sent to the Gladiator Island. For another five years, he acted as a male prostitute in order to survive and spent his time slowly trying to convince other gladiators to participate in a rebellion with him. A year after Ubilk’s arrival, the gladiators were pitted against a large Demon Beast. A majority of them died, and the only two who survived were Al and a woman named Hornet, who took interest in the one-armed man after he managed to live through the deathmatch.

Around the time of Vincent Vollachia’s coronation, Ubilk began the rebellion he had been planning for five years by murdering Auran, the assigned guard of Al, the only gladiator who had not joined him. When Al refused to join in an act of sedition, Ubilk ordered Hornet to kill him shortly afterwards, though the one-armed man would barely escape certain death. The gladiators sought to take a countess who was visiting Ginunhive by the name of Serena Dracroy hostage. However, they instead captured Priscilla Pendleton, who feigned being Serena and was taken captive to the room of the murdered master of the island, where Ubilk was. He chose to reveal his heritage as a member of the Evil Eye Tribe and spoke of his plans with Priscilla. Rather than seeking independence from the Empire, which was what all of the gladiators besides Hornet sought to achieve, Ubilk's true plan involved buying time for something; Priscilla speculated that he intended to send some of the Nine Divine Generals to the Gladiator Island as a distraction so that the Emperor could be killed while the Generals were dispatched elsewhere. As a consequence of the uprising, Olbart Dunkelkenn, the Third ranking Divine General, was dispatched to the island along with Arakiya.

While trying to enter the island, Arakiya found a severely injured Al. She made the decision to heal him, and after a brief period of conversation, the two went onto the island to figure out how to open the drawbridge in order to send in her reinforcements. However, Hornet found the two of them and began to duel Al. Meanwhile, Priscilla saved her husband Jorah with the help of Balleroy Temeglyph and a gladiator called Gallito’s, though the gladiator was swiftly subdued by Miles after he began panicking. Shortly afterwards, Priscilla used a broadcast Meteor to reveal Ubilk's plan, splitting the gladiators into two factions that either sought to ensure their survival or to be free.

Priscilla’s message had no effect on Hornet, as her goal was to fall gloriously in battle at the hands of a strong opponent. Al used his ability to continue distracting Hornet and buy enough time for Arakiya to burn the body of a shinobi who used a technique known as the Poison Hand, causing the Gladiator Empress to die a death without honor. Olbart confronted Al after the drawbridge was lowered and asked if he wanted a reward, but the man declined the offer and said his goodbyes to Arakiya. Before Ubilk, the instigator of the rebellion, could be apprehended and questioned for his motivations, he was thought to have escaped Ginunhive via a teleportation mechanism within the murdered island head’s room. In the end, the ways of the Gladiator Island generally remained the same as they were before the insurgence.

When Al escaped the Gladiator Island at an unknown point in time after the revolt, he was given the jet black replica of the Gladiator King’s helmet while leaving. After his escape, the head of the island at that time was promptly fired. To fill up the position, Vincent Vollachia appointed Gustav Morello as the new Island Chief. Under Gustav's leadership, the Gladiator Island was remade from its previous lawlessness into a more orderly place where there were less unnecessary deaths. As a result, the number of people who died from injuries or illnesses decreased.

Locations

 * Gladiatorial Arena: The arena is a circular field with high walls, located at the very center of Ginunhive. It is where the Gladiator Island’s deathmatches and Sparkas are held. There is a passageway for gladiators that leads into the arena, which is lowered by an iron gate whenever no events are held there. Additionally, a separate iron gate and passageway are used to bring Gladiator Beasts into the arena.
 * Seating: On the other side of the walls surrounding the arena, there is staircase-like seating where spectators can view ongoing deathmatches or Sparkas.
 * Healing Room: The healing room is located in the lower stratum of the island. The room was once occupied by Null, who used his amateur healing skills to treat other gladiators to the best of his abilities. It is also known as the corpse room, as it is where many who fall in the arena become corpses.
 * Office: The office of the Island Chief is located in the upper stratum of the island. It is a spacious but mostly empty room, only containing a desk, a guest sofa, a bookshelf, and a toolbox, which are all used for Gustav’s work.
 * Common Rooms: The common rooms serve as the living quarters for the gladiators. There are usually multiple gladiators assigned to a given room.
 * Dining Hall: The dining hall is a space where the gladiators usually eat their meals together.
 * Library: A library on the island was formed when Gustav Morello decided to start taking in books. It is a place where the gladiators often spend their relaxation time together.
 * Observation Decks: There are a few balconies that serve as observation decks around the island. They overlooks both the island itself and the lake that surrounds it.
 * Control Tower: The drawbridge used to enter the island raised and lowered at a control tower. The large metal door at its entrance is sealed by an impressive lock.
 * Lake: The Gladiator Island is surrounded by a black lake. It is filled with various aquatic Demon Beasts, which, next to the deathmatches, are the second most common causes of death in the area.

Staff

 * Gustav Morello (Island Chief, Governor)
 * Auran (guard) (former)

Former Gladiators

 * Reid Astrea
 * Gladiator King
 * Neiji Rockheart
 * Al
 * Ubilk
 * Hornet
 * Gallito
 * Null
 * Cecilus Segmunt
 * Hiain Yatz
 * Weitz Rogen
 * Idra Missanga
 * Natsuki Subaru
 * Tanza
 * Orson
 * Hitz
 * Nadrey
 * Quonson
 * Codley
 * Rex
 * Milzac
 * Cashew
 * Moizo
 * Deeroy
 * Creegkin
 * Codroe
 * Phenmelle
 * Jawsrough

Trivia

 * The area of the Empire in which Ginunhive is located has a perpetually overcast sky that subtly darkens it, even when the sun is out.