For years, a seemingly endless war has raged between the technologically advanced Heavenly Empire and the country of powerful magic users known as the Nebulis Sovereignty.

In the present day, a master swordsman from the Empire named Iska and the "Ice Calamity Witch" from Nebulis' ruling family, Aliceliese, meet on the battlefield, determined to kill each other.

[62] An anime television series adaptation was announced at the "Fantasia Bunko Dai Kanshasai 2019" event on October 20, 2019.

Seima Iwahashi, Ryōta Tomura, and Ryūichirō Fujinaga of Elements Garden composed the series' music.

", while Sora Amamiya performed the ending theme "Koori no Torikago" (氷の鳥籠, "Ice Bird Cage").

[5] Funimation acquired the series and streamed it on its website in North America and Britain and Ireland, and on AnimeLab in Australia and New Zealand.

[85] On August 6, 2024, it was announced that the fifth and future episodes of the second season would be delayed indefinitely, with the reasoning being "to maintain the quality" of the production.