Manga Like Knight Under My Heart

Have you ever skipped studying to play video games? Unfortunately for high school senior Yu-Sin Lee, the stakes are a little higher than flunking, as he finds himself trapped in a VR-based MMORPG. Yu-Sin was selected to beta test the game, only to be forced to fight for his life in a seemingly endless loop. What was supposed to be a light distraction from the stress of high-school life becomes a desperate struggle for survival as Yu-Sin battles his way through REAL Online, a dark fantasy world created by a mysterious tech company with uncertain motives. (Source: WEBTOON, edited) Note: Includes one extra chapter.