In 1863 Japan, pro-and anti-shogunate factions clash as the era of swords comes to a close. Manifesting as Sword Warriors, Horikawa Kunihiro and Izuminokami Kanesada awaken to protect the world from the Time Retrograde Army-soldiers sent to alter history. Banding together with other warriors, they devote themselves to defeating this future army. The fate of history lies in these heroes' hands.
