Old Foolish Play: I Sacrifice Madness to the Old Gods

When reason becomes a luxury, madness becomes the only normal state. The world of psychiatrist Lin Du collapsed overnight. He was forced into a cruel game with "madness" as the rule - [Endless Nightmare]. Here, cards are power and curse. Defeat a monster and you will capture its power and carry its madness. Every time a card is used, sanity is slipping into the abyss. When identities are reversed, reality collapses. When Lin Du met "himself" in a hospital gown at the end of the corridor, he had to face the last question: Who is the person holding the medical certificate? Or is it the name on the medical certificate that is about to be completely lost?