A special one-shot to promote the release of The Legend of Heroes: Trails of Cold Steel IV, featuring a sneak peek of the game's story. The Great Twilight has begun, the awful curse spreads throughout the Erebonian Empire. As the power of the Ashen Chevalier, Rean Schwarzer, becomes uncontrollable, his real self starts to fade. While the world heads for its demise, what can the remaining members of the Original and New Class VII do to save their friend and their world?