<Korean TV Series NOW> ”The Art of Negotiation” EP12 (final episode), Jang Hyun Sung appears in front of Lee Je Hoon again = Viewership rating 10.3%, Synopsis / Spoilers

※This article contains spoilers. In EP12 of the JTBC TV series "The Art of Negotiation" (viewership rating: 10.3%), Tae-soo (Jang Hyun Sung) reappears after being fired.
The truth about that day three years ago was revealed at the disciplinary committee meeting. Tae-soo, who had planned to manipulate the stock price with Dr. Go (Park Hyuk-kwon), tells JUNHO (Lee Je Hoon) that he would be the one to "return to Jumbo Pharmaceuticals."
Don't invest in it. Jumbo Pharmaceutical's Ultra Focus is not developed in-house, but is imported from the US. Jumbo Pharmaceutical doesn't even have a proper research lab at its headquarters."
JUNHO immediately advised his brother, "You sold your shares in Jumbo Pharmaceutical, right? You have to sell them now." Joo-seok (Hong In) replied, "You sold them.
I have just lost my annual salary," he said, unable to contain his anger. When Jumbo Pharmaceutical's stock price rose while he was consulting on a business loan, Joo-seok decided to "only get the money back" and embezzled the client's loan.
He bought shares in Jumbo Pharmaceuticals. It looked like Joo-seok had bought the shares that Tae-soo had sold out of order, calling them a "swindler."
While Junho was attending the disciplinary committee meeting, Wonseok sneaked into Dr. Ko's office.
(Lee Seongje) stole a laptop. "Because the stock price manipulation forces don't trust each other, I'll keep a record of all the amounts exchanged, the dates, and the details of all the transactions. I can't die alone.
When Junho said, "I can't do that," Tae-soo laughed and said, "So? Did they find my name in the file?" Seungyeon (Kim Dae Myung) appeared and handed Junho the document.
Junho, who was investigating the contents, revealed Tae Soo's crime, saying, "It's a record of Director Ha using inside information to buy and sell jumbo stocks. My brother received the stocks that Director Ha tossed one minute later."
"So you're saying it's my fault that your brother died?" Tess frowned, and JUNHO calmly replied, "I don't think so."
"According to this record, Executive Director Ha participated in stock price manipulation and
When he heard the allegations, he sold all his stocks to sneak away from the authorities. My brother took them. Tess replied, "I just held on to them for a little while and then sold them.
"I didn't make any money from it," he said, trying to avoid the situation. "You made some money, even if it wasn't as much as you planned," JUNHO said, and asked, "Bring it here," to prove his point.
When Tae-soo tried to get rid of his excuses, he said, "Vice President, please. This is the seat for those who are being disciplined." Tae-soo called out, "Yoon Junho, you bastard," and jumped on Junho.
Jaesik (Sung Dong Il) heard this and said that it was true that Junho had leaked information to his brother, but he couldn't say anything to someone whose brother had died.
He then fired only Tae-soo. Later, it was revealed that it was Junho's plan to send a letter to the audit office directly against him, forcing a disciplinary committee to be convened.
Meanwhile, Tae-soo, the new director of Samuel, has come to the company and asked San-in to explain its business plan for the next fiscal year. Tae-soo begins to explain.
He even showed a cheeky attitude by demanding an explanation directly from Jaesik, asking JUNHO, "What does a mere team leader know about the future of the company?"