Muoi: The Legend of a Portrait

So-yeon planned elaborate revenge because three years earlier, Ji-hoon and his friends sexually assaulted her, and Seong-eun recorded the incident. Rumors about her promiscuity spread, and Yun-hee's semi-autobiographical novel "Secrets & Lies" amplified those rumors, painting So-yeon in a negative light. So-yeon never truly forgave Yun-hee for this betrayal and used the Muoi legend as a vehicle to destroy both Yun-hee and her old friends who spreading the rumors.

Earlier, So-yeon asked about mutual friends and appeared guarded during the reunion, hinting at unresolved resentment.

Yun-hee is possessed by So-yeon's spirit, not Muoi. The key revelation is that So-yeon was the true mastermind who orchestrated the entire curse scenario. When Yun-hee stabs So-yeon with the hairpin, So-yeon laughs and says her death will begin the curse's true awakening. In the epilogue, the possessed Yun-hee murders Ji-hoon and Seong-eun in Korea while wearing Muoi's ring, suggesting So-yeon's revenge continues through Yun-hee's body.

At the temple, So-yeon's self-portrait appeared in the spot reserved for Muoi's portrait, foreshadowing her takeover of the curse.

Muoi's portrait was painted by artist Nguyen with the help of monks who trapped her vengeful spirit within the painting. The portrait was sealed at a temple until World War II, when Japanese Major Yoshimoto raided the temple and broke the seal, releasing the curse. The portrait causes those who encounter it to experience Muoi's torments, nightmares, painful body contortions, and eventually Muoi's reflection appearing in mirrors. A metal hairpin used by monks to seal the spirit can supposedly end the curse if stabbed into the possessed person.

The legend told early on establishes that Muoi became a vengeful spirit trapped in the abandoned house after her tragic death.

So-yeon was the one who originally introduced Professor Kim to the Muoi legend, not the other way around. This reveals her deep involvement with the supernatural scheme from the beginning. She painted a self-portrait in Muoi's style, showing her psychological alignment with the cursed spirit. So-yeon used the legend as a framework for her revenge plot, positioning herself as someone who could guide Yun-hee deeper into the curse while remaining seemingly helpful.

During the temple visit, the monks seemed to recognize So-yeon, hinting at her prior connection to the legend.

So-yeon revealed she left Korea after Ji-hoon and his friends sexually assaulted her. Seong-eun recorded the incident on camera, and rather than helping So-yeon, the recording spread along with rumors about her promiscuity. Yun-hee's book "Secrets & Lies" further amplified these rumors by portraying So-yeon negatively. This traumatic event and the subsequent social betrayal directly motivated So-yeon's elaborate revenge scheme years later.

So-yeon asking about mutual friends and her guarded demeanor upon reunion hinted at painful history.

The metal hairpin was a sacred object used by monks to originally seal Muoi's spirit inside the portrait. At the temple, the elder monk instructed Yun-hee to stab the possessed So-yeon with the hairpin to end the curse. However, the plan backfired, instead of stopping the curse, stabbing So-yeon appears to have allowed her spirit to take possession of Yun-hee, completing her revenge as she laughingly predicted.

The monk specifically warned it would end the curse if used on the possessed person, not knowing So-yeon's true role.

The mansion secretly belonged to Japanese Major Yoshimoto, who during World War II had raided the temple and broken the seal on Muoi's portrait, releasing the curse. The portrait had been hidden in the mansion all along. A photo of Major Yoshimoto with the caption "Death begins the curse" was found in a secret passage, revealing the dark history of the location and connecting the historical release of the curse to the present events.

The caption on Yoshimoto's photo directly foreshadowed the curse's activation.

So-yeon painted a self-portrait in Muoi's style to psychologically align herself with the cursed spirit. This wasn't merely artistic expression, it represented her intention to merge with or become the new vessel for Muoi's vengeance. At the temple, her self-portrait appeared in the exact spot where Muoi's portrait should have been, confirming she successfully replaced Muoi as the dominant force behind the curse.

Yun-hee discovered this portrait in So-yeon's studio alongside her highlighted copy of "Secrets & Lies."

Eun-jung died in a bizarre accident after discovering the truth about So-yeon. She was Professor Kim's assistant who revealed that So-yeon had originally introduced Kim to the Muoi legend. Her death served to eliminate a potential witness and add to the supernatural chaos surrounding Yun-hee. Her death also prevented her from warning anyone about So-yeon's true role in the scheme.

Eun-jung's death occurred right after she provided crucial information about So-yeon's involvement.

When Yun-hee stabbed So-yeon with the hairpin, So-yeon laughed and stated her death would begin the curse's true awakening. This revealed her entire plan, she orchestrated events so that her death at Yun-hee's hands would transfer her spirit into Yun-hee, allowing her to personally enact revenge on Ji-hoon and Seong-eun. Her statement was not about Muoi's curse awakening, but about her own revenge plot completing through Yun-hee's possessed body.

So-yeon told Yun-hee to visit the temple to learn about the curse, knowing exactly how events would unfold.