Terminally Ill Genius Dark Knight (Korean: 시한부 천재 다크나이트) is a high-stakes fantasy manhwa that blends the "Game Transmigration" trope with a "limited lifespan" mechanic. Written by Jung SeonYul and illustrated by Nagi, it has quickly become a fan favorite for its unique tension and its morally gray, hyper-efficient protagonist.

The story follows Yoo Chan, a pro gamer who has spent his entire life mastering the notoriously difficult RPG, Inner Fantasia. After clearing the game under impossible conditions, he finds himself transmigrated into the body of Knox von Reinhaver, a villainous extra in the game world. However, there is a massive catch: Knox is a "Terminally Ill Genius." His body is failing him, and his "Life Expectancy" is a visible stat that ticks down whenever he uses his overwhelming power. To survive, he must use his "Dark Knight" abilities to change the game's tragic ending while managing a body that is constantly on the verge of collapse.

Alternative Names and Titles

Terminally Ill Genius Dark Knight / The Terminally Ill Dark Knight / 시한부 천재 다크나이트 / Oneulman Saneun Gisa