is a Japanese light novel series written by Kyà Âichirà  Tarumi and illustrated by Thores Shibamoto. It began serialization as a web novel on Shà Âsetsuka ni Narà  in July 2021. It was later acquired by Hifumi Shobo who began publishing it under their Saga Forest imprint in December 2023. A manga adaptation illustrated by Takeshi Nogami began serialization on Hifumi Shobo's Comic Nova website in January 2024.
The series is set in a world of "guns and magic" where science and technology have advanced while magic still exists. A dark elf arrives in Orcsen, a nation formed by a group of orcs and other demons. Introducing herself as Dinerus, the dark elf claims that in Orcsen's neighboring country, Elfind, the white elves are ethnically cleansing the dark elves. Coincidentally, war with Elfind is just a matter of time in Orcsen, and King Gustav of Orcsen proposes to Dinerus that she form a cavalry unit of exiled dark elves. Dinerus accepts, and to seek revenge against the white elves and to repay her debt of gratitude to Gustav, who saved her life and the lives of 12,000 of her compatriots, she throws herself into the war against her former homeland.
Written by Kyà Âichirà  Tarumi, History of the Kingdom of the Orcsen: How the Barbarian Orcish Nation Came to Burn Down the Peaceful Elfland began serialization as a web novel on Shà Âsetsuka ni Narà  on July 1, 2021. It was later acquired by Hifumi Shobo who began publishing it with illustrations by Thores Shibamoto on December 15, 2023. Six volumes have been released as of November 14, 2025.
During their panel at Anime NYC 2025, Seven Seas Entertainment announced that they had licensed the series for English publication, with the first volume set to release in June 2026.
A manga adaptation illustrated by Takeshi Nogami began serialization on Hifumi Shobo's Comic Nova website on January 12, 2024. The manga's chapters have been compiled into six tankà Âbon volumes as of March 2026.
During their panel at Anime NYC 2025, Seven Seas Entertainment announced that they had also licensed the manga adaptation for English publication, with the first volume set to release in July 2026.
The series won the Gold Prize at the 2nd Hifumi Shobo Web Novel Awards in 2022. The series was ranked third in the tankà Âbon category at the 2024 Next Light Novel Awards. The series was ranked 10th in the Tankà Âbon and Novel category in the 2026 edition of Takarajimasha's Kono Light Novel ga Sugoi! guidebook.
The manga adaptation was a prize winner in the "I Want to Deliver It to the World" category at the 3rd Rakuten Kobo E-book Awards.