- Season 1 - Oasis

: Du-hak's privileged childhood rival who constantly battles his own insecurities and unrequited love for Jung-shin. Reception and Viewing Information Oasis (Korean Drama) - AsianWiki

: A bold, honest transfer student from Seoul who manages her family’s theater and remains the emotional anchor for both men. Oasis - Season 1

The story is set against the backdrop of a rural village and later moves into the gritty urban landscape of a changing South Korea. : Du-hak's privileged childhood rival who constantly battles

: An intelligent boy born into poverty who turns to a life of crime and revenge after being unjustly imprisoned. : An intelligent boy born into poverty who

: Years later, the trio reunites, but their paths have diverged sharply. Du-hak has become a "political gangster" seeking revenge for his family's suffering, while Cheol-woong has risen to power as an elite.