Ki Sung-yueng says he has no problem getting tough with his South Korea team-mates if it helps them to make the most of their World Cup campaign.
Shin Tae-yong's side take on Sweden in Nizhny Novgorod on Monday in their opening match of a tough-looking Group F that also contains Mexico and Germany.
Ki only turned 29 in January but is one of the most experienced heads in the team, having competed at two previous World Cup finals, two Olympic tournaments and two Asian Cups, finishing as a runner-up in 2015.
The midfielder admits it is a different feeling to head into football's grandest competition as team captain but he is determined to make sure every one of the South Korea players shows they deserve to be in Russia.
"We've been preparing for the World Cup for four years and worked very hard, not only those who made the squad but those who didn't," he said. "As a captain, I feel a strong sense of responsibility and I want to do well.
"I want the players to prepare in a comfortable way, so I try to help them in any way. Sometimes, there was tension within the team, and sometimes the atmosphere got too light, so I tried to balance the two. I really want the players to take advantage of this opportunity. It will be a really important experience in their lifetime."
Ki, who was only 21 at his first World Cup in South Africa in 2010, added: "Compared to 2010, I've got a little bit older. I was the youngest then.
"This is my third World Cup and the World Cup of course is a very tense situation, there's a lot of pressure.
"Pressure-wise for me, I think it's a lot less, but now I'm captain and I feel a stronger sense of responsibility. I think that's the biggest difference."
It has been estimated there could be as few as 1,500 South Korean fans inside the 45,000-seater Nizhny Novgorod Stadium on Monday, but former Swansea City man Ki is just hoping for a packed crowd – regardless of their allegiance.
"I think it's good to have a lot of people in the crowd. Whether they are Swedish or Korean really doesn't matter," he said. "The players have a lot of experience in that aspect. It would be great if we have a full stadium, if the players can feel the World Cup atmosphere.
"Korea have more experience than Sweden. I don't know how many Swedish players have played in the World Cup but we have quite a few players who have had that experience. All that's left is for us to show you on the pitch."
|Ronaldo right about Juventus team spirit – Allegri|
|Klopp: I´m not the pope of football tactics|
|Stade beat Ospreys on emotional Chauvin tribute night|
|Ligue 1 survival bid a marathon not a sprint for Monaco, as club appoints distance runner|
|Vertonghen eyeing Spurs future beyond 2020|
|De Bruyne injuries could be a blessing for City, says Guardiola|
|Emery prepared to face Arsenal´s centre-back crisis|
|Ulster complete Scarlets double, Exeter gain Gloucester revenge|
|Sheffield United 1 West Brom 2: Baggies comeback boosts automatic promotion push|
|Del Potro back on court following knee injury|
|Canelo v Fielding: Rocky ready to write his own fairytale in New York|
|Boca part company with Schelotto after Copa Libertadores loss to River|
|Canelo v Fielding: Tale of the tape|
|Juventus defender Cancelo has knee surgery|
|Canelo v Fielding: Alvarez and Rocky make weight in New York|
|Spalletti does not fear another mid-season crisis at Inter|
|Salah headlines CAF Player of the Year shortlist as Koulibaly misses out|
|Beckham Jr. out of Titans clash|
|Lipsky hits the front at Leopard Creek|
|Pederson coy over Wentz back injury|
|Liverpool ´not really likely´ to be active in January window, reveals Klopp|
|Always on the move and unpredictable - Pavard reveals surprising choice over toughest opponent|
|We need to get back to respect - Lampard alarmed by hate in football|
|Giles returns to England to replace Strauss as director|
|Hansen has no issue with Milner-Skudder Toulon switch|
|Juventus to rest Ronaldo after Torino showdown|
|Titmus strikes gold again as world records tumble in Hangzhou|
|Malinga to captain Sri Lanka in New Zealand|
|Rivaldo would like ´excellent´ Isco at Barcelona|
|United a long way from Mourinho´s vision|
|´Klopp denies an answer!´ - Liverpool boss dismisses questions about ´world-class´ Pogba|
|Returning Nowitzki ´so tired´ after making NBA history|
|Aguero and De Bruyne in contention for Manchester City v Everton|
|Simeone has no plans to cash in on Costa|
|Canelo v Fielding: Alvarez´s greatest nights|
|Fabregas: Chelsea being unfairly scapegoated over racism allegations|
|Crisis? What crisis? Klopp focuses on defensive solutions for United clash|
|Hope cannot inspire Windies as Bangladesh cruise to series win|
|Benitez picks up Premier League Manager of the Month award|
|Chavez, Marquez and Canelo - Mexico´s greatest multi-weight world champions|
|Bale set to miss Real Madrid v Rayo Vallecano|
|Robben out until January as Bayern look to avoid serious injury|
|Milan avoid UEFA ban in FFP punishments.|
|Mourinho compares Liverpool to ´an amazing house´ but insists trophies matter|
|Brisbane Roar 2 Melbourne Victory 4: Muscat´s men hit A-League summit|
|Bumrah confident second Test is ´in the balance´ after India recovery|
|Isco gesture was for a corner or foul, claims Solari|
|Harris leads Australia into ascendancy on day one|
|ATP announces candidates to host future Finals|
|Ronaldo: Juventus fans refuse to lose to Torino|
|Hero Rivers feared he had cost Chargers in KC|
|Williams would welcome Llorente back to Athletic Bilbao|
|Liverpool v Manchester United: Minding the gap|
|Milan elimination unjust, fumes Leonardo|
|Paul hails ´sick´ Harden after record-breaking display|
|Liverpool v Manchester United: Salah, Mane and Firmino v Rashford, Martial and Lukaku in Opta number|
|Canelo open to GGG trilogy as he chases place in Mexican history|
|The big Friday Premier League quiz|
|Harden posts record fourth 50-point triple-double in win over Lakers|
|Barcelona squad happy with Dembele, says Alba|
|Chargers rally past Chiefs to clinch playoff spot|
|WATCH: Chargers top Chiefs on dramatic two-point conversion in final seconds|
|Suns owner Sarver committed to keeping team in Phoenix|
|Chargers WR Allen leaves with injury after near-spectacular catch|
|Socceroos not giving up on Mooy for Asian Cup|
|Cooper says Raiders owner wanted to trade him to Cowboys|
|Pochettino jokes Levy is ´worried´ about losing him|
|Barcelona would welcome Morata – Alba|
|Toure not a priority for West Ham – Pellegrini|
|Koscielny no certainty to face Southampton, says Emery|