Lee Jun Young's memory loss revealed as a lie in 'Four Hands, Two Sonatas'

Lee Jun Young, who was thought to have lost his memory, actually remembered everything. In episode 9 of tvN's weekend drama 'Four Hands, Two Sonatas,' the show delivered another twist by revealing that Choi Jeong Yo's memory loss was a lie. Combined with Yoon Se Ah's persistent stalking, the secrets surrounding Song Kang are resurfacing.

The episode aired on the 26th depicted the process of Kang Bi O (Song Kang) discovering the full truth behind the tragedy that befell him 9 years ago. After overcoming a slump with the help of Choi Jeong Yo (Lee Jun Young), Kang Bi O fell into shock upon confirming that his mother, Kang Ji Hye (Yoon Se Ah), had orchestrated the kidnapping of Choi Jeong Yo in the past.

Kang Bi O immediately went to find Kang Ji Hye, presenting photographic evidence and demanding an explanation. He even grabbed his mother's hand, urging her to go to Choi Jeong Yo and ask for forgiveness, but Kang Ji Hye shook her son off. She pressured him by suggesting an extreme choice, brandishing scissors and claiming that if the incident were revealed to the world, not only her life but also Kang Bi O's life would be over.

Ultimately, Kang Bi O went to find Choi Jeong Yo and apologized, stating that he was able to take 1st place thanks to the sheet music and interpretation Choi Jeong Yo had lent him during the competition in the past, adding, "My place right now originally belongs to you."

Choi Jeong Yo looked at him with a complex expression and requested that he stand with him at the premiere of his original composition. While Kang Bi O threw himself into performance practice while carrying the weight of guilt, Choi Jeong Yo coldly evaluated his playing and continuously pointed out his shortcomings.

Meanwhile, Kang Ji Hye's suspicions grew. To confirm whether Choi Jeong Yo had truly lost his memory, she began to follow him personally. After receiving news that his father had disappeared, Choi Jeong Yo visited an alcohol addiction treatment hospital, where he discovered Kang Ji Hye tailing him and quickly lost her.

However, that wasn't the only suspicious behavior Kang Ji Hye captured. During the last performance, she also witnessed Choi Jeong Yo suddenly leaving his seat, entering a specific practice room, and peeking behind a curtain. Kang Ji Hye did not let go of her suspicion, asking her son Kang Bi O, "What happens if Choi Jeong Yo doesn't actually have memory loss?"

In the end, Kang Bi O found the decisive clue. The practice room Choi Jeong Yo had secretly entered was the place where the two had first met through a competition during their childhood, and the scribbles they left behind at that time remained there. Upon confirming this, Kang Bi O realized that Choi Jeong Yo had not forgotten the past, but was pretending to have memory loss while remembering everything.

With the truth of the kidnapping from 9 years ago revealed and Choi Jeong Yo's memory loss proven to be a lie, the relationships in 'Four Hands, Two Sonatas' are expected to change completely. Tension is rising as viewers wonder if Choi Jeong Yo's actions toward Kang Bi O were driven by a purpose other than simple revenge, and how far Kang Ji Hye will dig into the relationship between the two.