: Three childhood friends—Lee Du-hak, Oh Jung-shin, and Choi Cheol-woong—navigate a complex love triangle. Their lives are shattered when a tragic accident occurs, and Du-hak's father forces him to take the blame for a crime committed by Cheol-woong, leading to a four-year prison sentence.
: A bold, honest transfer student from Seoul who manages her family’s theater and remains the emotional anchor for both men. Oasis - Season 1
: An intelligent boy born into poverty who turns to a life of crime and revenge after being unjustly imprisoned. : Three childhood friends—Lee Du-hak, Oh Jung-shin, and
: 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 : Three childhood friends—Lee Du-hak