Kim leads the management team as they walk into My Dinh Stadium in Hanoi ahead of the fifth round of Group F's second World Cup qualification round.
Kim seems nervous before the game, having only five days to train with the team.
He took the job in May to replace Frenchman Philippe Troussier, following Vietnam's consecutive losses on international ground, including two defeats against Indonesia.
The Korean coach tries to sing along the Vietnamese national anthem on My Dinh Stadium.
During the game, he also gave some short orders in Vietnamese, such as "come back" or "focus."
Asked by reporters why he did not choose to sit, Kim said his standing was not so tiring as players running on the pitch.
Kim accompanies midfielder Nguyen Quang Hai as he was subbed out in the first half.
The coach has come to watch many V-League games this season, and most players that he sent to the pitch on Thursday, such as Hai, Nguyen Hoang Duc, Nguyen Tien Linh and Nguyen Van Toan, are on good form.
Kim bows to fans at My Dinh Stadium after the final whistle, receiving loud applause from the stand.
He hugs each player to celebrate their victory.
Kim, 47, has said he wanted to build a close relationship with the players, and hoped that they consider him as an older brother.
Kim joins his players to thank fans on My Dinh Stadium.
Their victory ended a seven-match streak where Vietnam drew or lost to various opponents under Troussier.
