The movie you're referring to is The World of Adultery (2020)
1280x720 (720p), providing a sharp enough image for mobile devices and laptops. World of Adultery -2020- Korean 720p WEB-DL 550...
, who starts an affair with a married woman he meets in an online chatroom. Despite having a girlfriend, Gyu-nam finds himself increasingly attracted to the woman as she tries to push him away. The movie you're referring to is The World
Which of those would you like?
The WEB-DL (Web Download) format ensures that the source was a clean digital stream (likely from a Korean VOD service), meaning there are no distracting "on-screen" watermarks or TV station logos. Why the 2020 Release Stood Out World of Adultery -2020- Korean 720p WEB-DL 550...