"Red Sun" Yoon Kye Sang learned how his father died.

On the 15th episode of KBS 2TV Monday/Tuesday drama "Red Sun" broadcast on April 7th, Hong (played by Lee Jae Won) said to Park Kang Jae (played by Jo Jin Woong), "You made Se Ro (played by Yoon Kye Sang)'s father Jung Do Joon (played by Lee Dae Yeon) die so how can you betray Jung Se Ro (played by Yoon Kye Sang)"?

However, Se Ro coincidentally heard this conversation. Se Ro held Park Kang Jae and asked what that meant. Park Kang Jae didn't make excuses and said, "He was chased by me and then got Into an accident" and answered directly.

Moreover he said, "Five years ago, we stole that Kong Woo Jin diamond. We were supposed to divide it up but your great father left with that. I had to chase him like a dog through the dark streets of Bangkok," and explained the situation. He also added that he was the person who locked up Kong Woo Jin (played by Song Jong Ho).

Se Ro heard this and was shaking in betrayal at a person that acted like a brother to him who hid all this.

Then, Park Kang Jae gave Se Ro a gun and told him to shoot him. He said, "You can't hit me though you really wan to right? Then what about me? Even though I had a lot against Jung Do Jun, do you think I wanted to kill him?" and made excuses.

Moreover, he recognized, "Yes, it's an excuse. Then how about this? Just like you went to jail becausee of Han Tae Oh, I went to jail becausee of your father. I went on an errand becausee he told me to but it wasn't a simple errand. I went away for a couple months and afterwards, my life was all twisted up" and he cried out about the past. In addition, he said, "The fact that they blamed others and faulted others to benefit their children - that's the same for your dad or Han Tae Oh."

Se Ro seemed to be in shock knowing the truth and laughed in disbelief. This made viewers' hearts hurt even more.