历史学家大多将雅利洛-Ⅵ的星球历史追溯到上千年前的神话战争，佩伦人十一国与维莱斯集团军的战争焦灼而持久。直到一场早来的春天彻底改变了战局，维莱斯人大获全胜。他们将消灭夙敌的功勋归于春日战神雅利洛，并用同名的诗篇赞美大地。如今银河记录中的星球名称——「雅利洛-Ⅵ」可能为包含诗歌章节的误译。
神话战争结束之后，雅利洛-Ⅵ迎来了长久稳定的和平，并完成了从刀耕火种到星际航行的发展。遗憾的是，雅利洛-Ⅵ是一颗资源相对贫瘠的星球。激烈的发展给雅利洛-Ⅵ带来了顶尖的科技水平，同时也带来了历史的终结。资源枯竭、星核坠落以及寒潮降临…众多的灾难彻底葬送了雅利洛-Ⅵ辉煌而短暂的文明历史。
寒潮中幸存的难民屈居一隅，遗忘了「雅利洛」旧名，建造了寒潮避难所城市「贝洛伯格」延续文明的灯火。因其封闭危险的自然环境，雅利洛-Ⅵ在「万界之癌」出现后与其他世界失去联系。
Jarilo-VI (Location)
Historians often start the planetary history of Jarilo-VI from the War of the Gods thousands of years ago. The war between the eleven Perun States and the Veles Union Army scorched the land for years until an early spring completely changed the fortunes of war, and the Veles had a total victory. They praised the spring war god Jarilo for helping them eliminate their arch enemy, and praised the land with poems of the same name. The current name of the planet in the cosmos's records — Jarilo-VI — may be a mistranslation that contains a poetry stanza number.
When the mythological war was over, Jarilo-VI welcomed a long period of peace and developed from a hunter-gatherer society to one conducting space explorations. Unfortunately, Jarilo-VI was a planet with few resources. Intensive development brought top-tier technological advances to Jarilo-VI, but also brought an end to their history. Exhausted resources, the arrival of a Stellaron, and the appearance of the Eternal Freeze... These various disasters completely annihilated Jarilo-VI's glorious but short-lived civilization.
The survivors of the Eternal Freeze managed to stay alive in a corner of the planet. They forgot the old name of Jarilo and created Belobog, a city made to shelter against the Eternal Freeze, and continued their civilization. Due to its isolated and dangerous natural environment, Jarilo-VI lost contact with other worlds after the appearance of the Cancer of All Worlds.
