I Really Didn't Want to Increase My Favorability! - Chapter 302 - 300: Failed Escape.

Once upon a time, an Alchemist Grandmaster from the World of Immortals accidentally took possession of a playboy, who hailed from a rich and powerful family, and became a student in the middle of his midterms.

By the means of a miraculous immortal technique, he blended in and mingled amongst the femme fatales’ group to dominate the city! The nature of this novel’s origin is shamelessness to the core; having no sense of shame is just a basic foundation, but if the most shameless isn’t set yet, then become it!

- Description from Novelupdates

lexander, a young billionaire, and some of his classmates died in a school bus accident. They had another chance to reincarnate in a fantasy universe. A world of Sword and Magic. However, while everyone got a wonderful gift, Alex got two guns. One is silver-colored while the other is black. He couldn't even use magic. Even when others made fun of him, and his stats were below average, Alex was still smiling as he believes in himself. With a fiery eye, he said: “On Earth, I was one of the richest, and in this New World, I shall be the strongest.” Together with the others, they were sent to the next world to begin again. This is the story of Alex with his two guns in another world, a fantasy world. The story of his struggles until he became the strongest. The tale of a journey towards the top.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates