The Genius Actor’s Aura is a Manga/Manhwa/Manhua in (English/Raw) language, Action series, english chapters have been translated and you can read them here.
Shin Yoomyeong, an actor with a very low amount of presence. He had spent his whole life on acting and had tirelessly strived to faithfully portray the small roles he was given although no one recognized his efforts. After 15 years, he found out that he had liver cancer and was unable to act anymore. Flooded with despair, he then met Miho, an acting spirit who told him that he could go back in time.