I Learned How to Fight Monsters in a Mental Hospital

[Urban High Martial Arts + Nightmare Invasion + Monster Fighting Upgrade + Young Salvation] Are there really mental illnesses in this world? Perhaps those who are called "madmen" just see the truth earlier than ordinary people. Under the night, in the shadow of the city, a monster named "Nightmare" is awakening. They were born out of fear, devoured human emotions, and grew quietly in the dreams of countless people. Eighteen-year-old Lu Yu entered a mysterious mental hospital because of an accident. After that, he saw unexplainable patients, heard whispers that were not of this world, and discovered that—— The so-called mental illness is just a precursor to the invasion of nightmares. In order to save those who were swallowed by the darkness, he picked up the knife and walked towards the abyss that no one dared to face. … In the center of the city, a black monster covering the sky and sun descended. The young man stood on the ruins, the moonlight illuminated his eyes, and purple-gold light bloomed from his hands. "The name of this sword is——The Sextet of Night." … Eighteen years ago, after the savior saved the world, why was he forgotten by everyone? Eighteen years later, Lu Yu was born, whose power did he inherit? The Wanxi Weaving Society, the Psychic Medical Hospital, and the mysterious supernatural organization … The truth hidden behind the world is emerging little by little. But Lu Yu just wanted to protect those who were still struggling in pain. "My life is not as romantic as you think." "I don't have a mental hospital in mind either." "All I have is a heart to eliminate harm for the people.