The Land of Orasha Naoe Kanou, the ace witch of the Fusou Empire, is summoned to the 502nd Joint Fighter Wing established in Petersburg. At the same time, she ignites a competitive spirit against Krupinski and Nipa, who have just arrived, spending her days competing for the number of enemy aircraft shot down within the unit. "You guys, don't steal someone else's prey!" In front of the three, who are anxious about their achievements and struggling to coordinate effectively, an unprecedented super-large Neuroi attacks!? The latest installment in the Witches series, brought to you by the talented Toshihiko Tsukiji, who also worked on 'Kantai Collection - KanColle - Kagerou, Set Sail!' This is a prequel to the TV anime 'Brave Witches' and another story depicting the birth of the 502nd Joint Fighter Wing is about to begin――.