My Husband, the Sword Immortal

Grand Scholar of Letters Julian Sullivan, a reclusive Sword Immortal, enters the palace to investigate a case and becomes Prince Consort to Princess Rosalind. They join forces to fight the Beirong invasion and Chancellor Quinn's rebellion, uncovering General Shaw's murder. The mastermind is the emperor, feigning paralysis. The emperor is brought to justice, and Julian Sullivan and the princess get their happy ending.