Daetteum Chakgakdanghaetda Goemul Cheonjaebaeuro

Ujin Kang is an ordinary nobody—until one day, he gains a strange ability. Whenever he reads a script or screenplay, he’s pulled into a mysterious dimension where he can relive the character’s experiences. When he ends up showcasing a performance born from that dimension, his acting is so overwhelming that it leads to a massive misunderstanding. Mistaken for a once-in-a-generation acting prodigy, Ujin is suddenly thrust into a world of media and celebrities far beyond his quiet, insignificant life.
(Source: WEBTOON)