It is 1868, the twilight hours of the Tokugawa Shogunate in the small land of Aizu Domain. One day, you and your brother Chitose begin serving at Nisshin-kan School. With your brother as acting instructor and yourself as assistant, you show your schoolmates how to better wield a sword. The retainers near Tsuruga-jo Castle in Aizu Domain send their children to Nisshin-kan School to train from the age of ten. Their minds are refined and skills sharpened to serve their lord and land. For some time peaceful days pass and friendships deepen. However, war breaks out in Aizu Domain between the Tokugawa shogunate forces and the new government army. Eventually, the young men of Nisshin-kan and others in are shipped off to the battlefield the as Byakko-tai. Meanwhile, in the midst of the loud horns of the battle, you are faced with a pressing decision... one that may shape your fates and your lives.