Married to the Martial Saint

Liam Foster travels through time, becoming a live-in son-in-law. He exposes the frame-up by his original wife, Bianca Blackwood, and divorces her. He marries Grand Princess Seraphina Zane. He outsmarts corrupt officials, develops a miracle drug, and kills Brian Blackwood. Facing the Northern Rong invasion, Liam Foster shoots the enemy chief, and stands shoulder-to-shoulder with the Princess, vowing to fight to the death to protect their nation.