I Was Born In The Worst World, Where Beautiful Magiclad Girls Suffer A Brutal Fate. ~if You Don’t Save Them With The Light Novel Knowledge From Your Previous Life, World Downfall?~

When he was in his third year of junior high school, he regained his memory of his previous life and was reincarnated in the world of “Magiclad Girl ~Secret Five~” where the “Magiclad Girls” fight “Demons”. “Mob” Kuroda Izayoi. It’s a heroic tale-like story of “Magiclad Girl”, but the “Magiclad Girls” get caught up in a very harsh fate, and moreover, there exists an “if story” of the world downfall. And the world he reincarnated in is the world of the worst “if story”…? ――Is this the heroic tale of the protagonist’s eccentricities in his earnest quest-run to save these girls?