As a Doctor, My Daughter Is the King of the Demonic Arena.

This is an epic tale of swords and magic, set in a fantasy world torn apart by war. The centuries-old hatred between the southern kingdom of humans and the northern kingdom of demons flows like a river on the border. Qisha, the vanguard general of the Demon Tribe, has a violent and warlike temperament. During a siege, he encountered Sang En, a doctor stationed in the isolated city. This man with three scars on his face, always as calm as water, crushed the arrogant Qisha with his absolute strength, but did not take her life, but bandaged her wounds with his own hands. "There may be many excuses for killing people, but there are no excuses for treating illnesses and saving lives." These words were like a seed buried in Qisha's heart, which had always only been about fighting and conquering. She went to challenge again and again, and was defeated again and again, but was healed by him again and again. However, the order from the Demon King's City broke this fragile peace - she was recalled to the Northern Territory and involved in a deeper whirlpool of power. When the Seven Evils were on the verge of death, Sang En sacrificed his life to save them. In that abyss, Sang En's dusty past was finally revealed. Two old enemies, a feud spanning two generations. The Seven Evils must face the truth about their lineage, while Sang En has to make a difficult choice: continue to escape, or launch a righteous charge again to protect the last person he cherishes. Beyond the flash of swords and shadows is a story about family love, betrayal and redemption in the wilderness where the north wind is whistling.