Jina: A notorious ronin known for his cruel methods. After achieving revenge, he lives a hollow life while secretly loving Siha. Myeongsiha: The young master of the Myeong family who has a crush on Arang. He is flustered by the sudden marriage proposal that has come his way. Arang and Siha both have unspoken feelings for each other but are unable to convey their hearts, leading to a series of misunderstandings. One day, while they find solace in occasionally meeting to spar, Siha receives news of a marriage proposal with another man. This marriage alliance is crucial for the peace of the martial world. Torn between duty and his feelings, Siha begins to draw closer to Arang, but with each step, their misunderstandings only deepen...