Champion (2018) - MyDramaList

Champion (Korean Movie); 챔피언; Chaempieon;冠軍大叔;冠軍; Mark is a disgraced arm wrestling champion who was adopted by an American family when he was
Mark is a disgraced arm wrestling champion who was adopted by an American family when he was a boy. He’s a bouncer at a club and befriends a Korean student named Jin Ki, who has a knack for schemes to make money from any situation he’s in. Lured by an arm wrestling tournament in Korea and Jin Ki’s scheme to make a fortune from it, Mark comes back to his native country

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Champion (2018) - MyDramaList

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Is there a Korean or Chinese drama that is similar to the Korean drama named Start-Up? - Quora

Champion (2018) - MyDramaList

Shin Hye Sun and Lee Jun Young's K-Movie Brave Citizen Confirms Release Date in 2023

October World Drama Highlights (and full list of releases). – Square Eyed World