"Inner Lunatic" is a fantasy RPG infamous for its extreme difficulty. However, to Yoo Chan, who was diagnosed with a terminal illness at a young age, this game was his entire life and has now become his reality. From now on, Yoo Chan has to survive in this world as Nox von Reinharber, the worst villain in the first act of the game. Will he be able to reach the end of the story safely?“Terminally-Ill Genius Dark Knight” follows the extraordinary journey of Yoo Chan, a young individual diagnosed with a terminal illness. To escape the harsh reality of his condition, Yoo Chan immerses himself in the virtual world of the fantasy RPG game called. Little does he know, this game will become his new reality.