The Sword with No Name

Mu Myeong is a Joseon dynasty headhunter who meets and falls in love with Lady Ja Yeong, who will become the future Empress Myeong Seong. A few years later, Ja Yeong entered the royal palace to marry King Go Jong. Mu Myeong still has feelings for Ja Yeong and, in an attempt to get closer to her, becomes her personal bodyguard.
Ja Yeong, now the Queen of Joseon, becomes involved in a power struggle between Russia and Japan, which are attempting to colonize Korea. Furthermore, King Go Jong's father, who wields true power in Joseon, works with foreign interests, which causes Ja Yeong to stand up to him and the foreign diplomats. The king's father then gives his implicit approval for the Japanese to assassinate Queen Je Yeong. Mu Myeong must now fend off these threats to protect the woman he loves.