The Guard's System to Power

Chase Landon transmigrates to a martial-arts world, becoming an Ensign. He marries abusive Ciara Jade, suffering humiliation. He awakens an intelligence System. He solves major cases. He rises from Ensign to Captain, breaking through to Grandmaster Realm. He befriends Grand Tutor's daughter Eve Paige and Princess Thea. He foils enemies' plots, gets the upper hand on his wife, and rises from bottom to top.