The cause of his death was confirmed as cardiac arrest, though no direct link was established between his past cardiomyopathy and his sudden passing. A friend’s social media post read: Even as I write this, I still cannot believe it. Actor Lee Yong-joo, who brought laughter to many as the clumsy yet lovable 'new recruit Lee Yong-joo' in 'Blue Tower,' passed away suddenly from cardiac arrest this morning.
The post also included a plea: We kindly ask those who worked with him or had connections to him to help spread this news by reposting widely.
Tragic Passing and Medical Background
Career Highlights and Legacy
A separate post from a fan highlighted his impact: “Actor Lee Yong-joo, best known for Blue Tower and Rude Miss Young-ae, has suddenly passed away at just 44. His friend announced the news on his social media, saying they still couldn’t believe what had happened. 44 is WAY too young. What is going on this August? Can you just be over already?” The actor’s wake is set to take place at Bundang Jesaeng Hospital’s funeral hall, with the funeral procession scheduled for the morning of August 31.

Public Reaction and Funeral Details
The news of Lee Yong-joo’s death prompted an outpouring of condolences from fans and industry peers. A post from a fan read: PRINCESS HOUR ACTOR LEE YONG JOO PASSED AWAY AT 44. He died from cardiac arrest as announced by a close friend on social media on August 29 May his soul RIP.
Another user wrote: Blue Tower actor Lee Yong Joo passed away at the age of 44 from a heart attack. The image of him looking so young and bewildered in his military uniform still lingers in my memory. I sincerely pray for the departed soul’s eternal peace.

Lee Yong-joo’s wake has been set up at Bundang Jesaeng Hospital’s funeral hall and the funeral procession will take place in the morning on Aug 31. His passing has left a void in South Korean entertainment, with many remembering him as a beloved figure whose humor and talent brought joy to audiences over the years.
