MTL - Strong Waist - Chapter 917 one more

I became the childhood friend of the protagonist in a novel. The childhood friend who died from taking drugs.

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

Arthur is an Atelier who works under pressure. When the curse of the Succubus activates his Netori System, Arthur is unable to resist his desire to win a woman's loyalty. There is no other reason for him to test a woman's loyalty that is easily shaken when his Netori System is activated.

Michael Alastair never mattered. In a world where strength was everything, he was nothing—just another powerless kid, easy to break and easier to forget. When his tormentors finally took things too far, his story should have ended in that alley, bleeding and alone.But fate had other plans.In the void between life and death, a voice spoke. Cold. Sharp. Amused. [NEW TALENT UNLOCKED: WRITER’S LEGACY]. A system unlike any other—sarcastic, relentless, and strangely invested—offered Michael a power beyond reason and a purpose he never imagined. Now, armed with an SSS-rank ability and a mission to rise, he’s back. And this time, he won’t just survive—he’ll rewrite the rules.