After Going Undercover in the Demon World, I Became the Demon King

This article is also known as: "I am invincible after entering the devil world" · Othello is an esoteric researcher in the Tower of the Sages. One day, he accidentally fell into the Demon Realm and became a humble undercover, waiting day and night for rescue from the Human Realm. Unfortunately, he is always targeted by demons from all walks of life In order to escape, he had to use human magic A terrifying thing happened · Othello: "First level fireball!" Demons: "What is this? Can fire be set like this? It's so scary!" Othello: "!?" Demons in the devil world don't know how to use magic! ? The professor of Demon Academy's eyes shone brightly and he shouted: "Genius, please come and teach in our Demon Academy!" Othello: "!!" · Later The Earl of the Demon Realm was punched to the ground by him When the Marquis saw him, he turned around and ran for his life. The Duke comes to invite a tea party to discuss magic. Othello finds himself invincible The students he taught have all become great dukes. · A few years later, the human world finally sent a rescue message, saying that the human world was about to enter the demon world to save people. Othello replied: Thank you, um... Actually, I have become the devil. Human Army: "??" · Food guide: 1. Easy direction, westward wind 2. Vest invincible flow Intention: In adversity, keep improving