In the penultimate week of "Alchemy of Souls: Light and Shadow," Lee Jae Wook makes a painfully life-changing decision. In particular, the truth about his identity is revealed. Here's what happened in the seventh episode of tvN's highly rated series.

'Alchemy of Souls' Episode 27: Jang Uk Wages War Against Cheonbugwan

Previously, Jang Uk (Lee Jae Wook) rushes to the gambling den where the Cheonbugwan mages ambushed Seo Yul (Hwang Minhyun).

Master Lee then orders Seo Yul to keep Jin Bu Yeon and Naksu's identities as a secret. At Cheonbugwan, Crown Prince Go Won also discovers that Jang Uk is the real heir to the throne.

Jin Mu discloses that Jang Uk was born with the King's Star, and that he's a man born under the power of the alchemy of souls.

ALSO READ: 'Alchemy of Souls' Episode 26: Go Yoon Jung Slowly Regains Own Memories

Meanwhile, Jang Uk yearns for Jin Bu Yeon, who leaves for Jinyowon without saying goodbye. Unbeknownst to him, the young priestess is waiting for him to fetch her once again.

At the end of the episode, Jang Uk, who couldn't sleep nor think straight because of Jin Bu Yeon's absence, searches for her.

Jang Uk then confesses how he misses her. At the end of the episode, the two share a soulful kiss.

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Written by Elijah Mully.