Having signed with the LA Dodgers in January, Korean infielder Hyeseong Kim enjoyed a dream rookie year in the major leagues, winning his first ring.As he made his way back to his home country after the postseason wrapped up, Kim was given a hero's welcome at Incheon International Airport. One individual present in the crowd, however, seemed to have no interest in celebrating the 26-year-old's achievements.Known colloquially as "Mr. Kim from Gocheok" amongst Korean baseball fans, the individual was present to stage a protest against Kim, holding up a banner urging him to repay a debt of 100 million won ($68,000) that his estranged father reportedly owes him.When he first spotted the protester at the airport, Kim did not take kindly to his presence, calling for security to intervene. On Friday, Kim finally discussed the incident via Instagram."I would like to apologize to anyone who might have been disappointed by my immature behavior at the airport on November 6th and the attitude shown in the interview afterwards. Actions at the time can't be justified by any words, and they continue to regret and reflect. I apologize to Mr. Kim who was on site, the journalists who were there for coverage, and everyone who watched this scene."I should have greeted you in a good way on my way back home in a year, but at that moment I couldn't express my feelings properly, and said something I shouldn't have done. No excuse, and deep reflection. I'll try to be a better person by doing this. Thank you very much to everyone who watches and supports me when I'm lacking (translated from Korean). View this post on Instagram Instagram PostThe protest against Hyeseong Kim at Incheon International Airport was not an isolated incidentThough this is the first time most MLB fans stateside learned of the protest surrounding Hyeseong Kim in his home country, what took place at Incheon International Airport was not an isolated incident.When he was plying his trade for the Kiwoom Heroes in the KBO, "Mr. Kim from Gocheok" would often turn up to the ballpark to stage similar protests, so much so that fans even began recognizing him.Under South Korean law, children are not legally obligated to cover debts incurred by their living parents, so Hyeseong Kim is not liable in any way. In light of this fact, Kim's legal team has taken action against the protester, filing several defamation suits. This has led to multiple convictions and fines. However, these measures have proven ineffective as a deterrent.