Rayseer Kingdom

 (レイセヘル王国, Reiseheru-okoku) is the kingdom that performed the ancient ceremony of Hero Summoning which summoned Mukoda, Kaito, Kanon and Rio, unknown to them that the real purpose was to to expand their territory. A nation with racial discrimination who abuses other races such as Elves, Dwarves and beasts. The foolish King Ivan has set up a war against neighboring countries, but eventually was defeated in response to the revolt of slaves and the fierce counterattack of neighboring countries. The royal family and nobles were executed while some were slaved to the kingdom of Malbert and the disappeared from the map.