Grimgar

Grimgar (グリムガル, Gurimugaru) is the name of the high fantasy location set in Hai to Gensō no Grimgar. It is unknown to many whether Grimgar is the name of an island, continent, or the entire world.

Tenryuu Mountain Range

 * Is the border between the Kingdom of Arabakia and the frontier.

The Quickwind Plains
North of the Dead Head Watching Keep. Wide and vast flat grasslands with slight hills and some low trees. The names comes from the strong winds that blow there. Inhabited by animals, come of them predators and giants.

The Wonder Hole

 * Also known as the Hole of Mysteries and the Hole of Surprises. It is a gigantic tunnel located 1.5 miles north of Lonesome Field Outpost.
 * Contains an entrance to the Dusk Realm.

Alterna
The Fortress City Alterna is the last fortified human settlement North of the Tenryus. It has all of the necessary facilities:
 * Alterna Frontier Army
 * Red Moon office
 * Tenboro Tower, a big stone tower with delicate decorations in the middle of the cities central plaza, the Margrave's home


 * Market
 * Dory's Skewers (meat skewers)
 * Yorozu Deposit Company
 * Sherry's Tavern
 * West Town, the poorer side of town. A dangerous place and the location of the Thief's guild.

Deadhead Watching Keep
Six kilometers north of Alterna, this keep was garrisoned by orcs until it was taken by the Alterna Frontier Army and several volunteer soldiers during the Operation Twin-Head Snake. The Keep is compromised of a big main rectangular building with three circular watchtowers on three of its corners, on the remaining corner is a bridge that leads to the walls that surround it. There are two gates on opposite sides of the walls.

Damuro
Approximately 4km to the Northwest of Alterna it was once Arabakia Kingdom's second largest city. It was taken by the Undying Empire and was later occupied by goblins. The Southeast section, the Old City is mostly ruined and is where the weaker goblins usually live.

Cyrene Mines
The mines situated 8km northwest of Alterna are divided into more than 10 levels with weaker Kobolds inhabiting the upper levels and the stronger ones further down. They are not entirely dark because a sort of light emitting plant grows in its tunnels.

Lonesome Field Outpost
Approximately 40km Northwest of Alterna in the Quickwind Plains. A town in a basin on a slightly elevated plateau. On the rim of this basin are several little watchtowers. In the center are several springs and a small town surrounded by a moat and fence. Usually the volunteer soldiers set up their camps just outside the towns gate, so you will usually find it filled with tents.

Free City of Vele
A human city state that is neutral. They trade with Alterna and with orcs and undead.

Crimson Moon Volunteer Army
Also known as Alterna Frontier Army Volunteer Soldier Corps, Red Moon. Its flag is a a red crescent moon on a white background. It is a subdivision of the Frontier Army.

Kingdom of Arabakia
The (almost) only human kingdom, that retreated south of the Tenryu Mountains and now occupies that area. Its last stronghold in the Frontier is Alterna.

Kingdom of Ishmael
Undead infest this kingdom.

Kingdom of Nananka
No longer exists. Orcs have formed the Kingdom of Vangish in the ruins of Nananka. The king of Vangish had asked Jumbo to become his vassal but was refused. The ensuing conflict between Vangish and Forgan resulted in the complete decimation of Vangish's army causing the king to fall from power.

Writing
See main article:  Runes (Alphabet) 

Lumiaris (ルミアリス, Rumiarisu)

 * God of Light


 * Worshiped by Priests and Paladins

Eldritch (エルリヒ, Erurihi)

 * The White Goddess
 * Described as a giant wolf
 * Worshiped by Hunters

Skulheill (スカルヘル, Sukaruheru)

 * Dark God and Ruler of Death
 * Worshiped by Dread Knights

Humans
See main article:  Inhabitants of Grimgar 

Pit Rat

 * These rats are the size of cats and are speedy with extremely tough hair that acts like armor. Considered similar to porcupines. They can curl up into a ball and roll away at a surprising speed. There are many subspecies of pit rat. While they are omnivores they prefer meat and will even target larger animals for food. Unfortunately, pit rat meat is not tasty and their pelts are of practically useless. They are considered vermin.

Horned Mane Dog

 * Similar to wolves as they hunt in packs at night. They also don't generally attack humans.

Horse-Dragons

 * Wildlife that is sold by merchants at the Lonesome Field Outpost.

Deer-Horses

 * Wildlife that is sold by merchants at the Lonesome Field Outpost.

Melruks

 * Large pseudo-chickens that can jump high and have limited flight capability. They also possess a strong kick with their large, scaled talon feet. They can be around the entrance of the Wonder Hole. Are often preyed upon the demi-humans residing in the first barrier of the Wonder Hole.

Muryans

 * Are ant-like non-humanoids that inhabit the Wonder Hole. They build nests throughout Wonder Hole. They are larger than humans, grape in color, are solidly built, and have small heads. Depending on the type of muryan some have a pair of hands in addition to the three pair of legs. Muryans do not mess with the demi-humans and the demi-humans do not mess with the muryans. Ustrels cause muryans to flee on site. The muryans differ in size and shape depending on their caste: worker, soldier, samurai, stallion, and queen. They seem to be somewhat vulnerable to Falz magic.
 * Workers are small, harmless, and considered worthless. They build and maintain the nests.
 * Stallions breed with the queen but nothing else is known about them.
 * Queens lay the eggs that turn into workers, soldiers, samurai, and stallions. Not much is known about them.
 * Soldiers primarily deal with external threats to the nest. They possess two blade-like arms and can take a fair amount of damage. Soldiers tend to gather around the samurai caste when in combat and will call other soldiers for reinforcements. Soldier's are vulnerable to Falz magic as the Lightning spell can kill one with a single hit. Some soldiers have a greenish gold exoskeleton which can be sold for money.
 * Samurai are vicious muryan that dual wield black blade-like weapons in their dexterous hands. They are quite adept at dual wielding. Soldiers tend to gather around as support for samurai in combat. Unlike soldiers, the samurai are not as vulnerable to Falz magic as getting hit with a Lightning spell only knocks them back a step. The blades that a samurai wield are not made of metal but something that is extremely hard yet looks like porcelain. The blades are worth decent money as they can be smelted down and combined with other metals to create high quality alloys.