Sengoku Gyouha Dullahan: Kagen no Keishousha
戦国驍刃デュラハン 〜下弦の継承者〜
A parallel version of the Sengoku era serves as the setting. Date Masamune pilots a massive machine known as Ouryuu. The robot's overwhelming strength proves difficult for the young Masamune to manage, resulting in numerous casualties. Concerned by Ouryuu's power, rival daimyo unite to form an alliance aimed at eliminating it.