The World's Least Interesting Master Swordsman: Volume 3

The Domino Republic’s peace with Arcana is shattered when Lain, the adopted daughter of the swordsman Sansui, is revealed as the last survivor of the fallen Imperial House. As political factions scramble to exploit her royal bloodline or eliminate her entirely, Sansui must step out of his quiet life to protect his daughter from the encroaching danger.