Episode 6 focuses on Jang Uk's continued training and a deepening political and romantic web in the fictional land of Daeho.

: At the Jang family home, discussions regarding a potential marriage between Jang Uk and Jin Cho-yeon intensify. Uk remains firmly against the union, expressing interest in "another girl" (Mu-deok).

: The Crown Prince Go Won attempts to dissuade Mu-deok from letting Jang Uk participate in their upcoming duel, fearing the political fallout if Uk is killed.

Critics and audiences gave the episode positive reviews, often highlighting its balance of comedy and high-stakes drama. : The episode holds an 8.5/10 on IMDb .

: Seo Yul and Park Dang-gu visit Jang Uk at his remote training ground. Mu-deok continues to push Uk to his limits, while a romantic rivalry begins to simmer between Uk and Seo Yul, particularly as Yul shares a secret past connection with the soul inhabiting Mu-deok (Naksu).

: Reviewers from The Review Geek praised the episode for leaning into comedy before shifting to a major cliffhanger. Leisurebyte noted that the revelation of Master Lee's identity as a pupil of the founder of Songrim was a highlight for lore-building. Alchemy of Souls – K-Drama Episode 6 Recap & Review

: Upon entering Jinyowon, Mu-deok encounters a mysterious mirror that seems to recognize her. As she reaches out to touch it, she is sucked inside, leaving her fate and her true identity as a Jin family descendant hinted at. Production and Cast Directors : Park Joon-hwa. Writers : The Hong Sisters (Hong Jung-eun and Hong Mi-ran). Lead Cast : Lee Jae-wook as Jang Uk. Jung So-min as Mu-deok. Hwang Min-hyun as Seo Yul. Shin Seung-ho as Crown Prince Go Won.