After turning the tables on the Yamato dominion's overwhelmingly more powerful forces, the high school prodigies press their advantage all the way to the inner defenses of their enemy's stronghold, Azuchi Castle. To stop them in their tracks, Princess Mayoi casts another cruel spell on the Yamato people, weaponizing them against Tsukasa and the other prodigies! As Tsukasa determines how to move forward with the fewest casualties possible, Mayoi's tragic past and the dark truth that Yamato was founded on will be revealed...