SSS Rank: Spellcraft Sovereign - Chapter 8: First Entry (1)

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

Kenichi Yamada was a 35-year-old salaryman. As a hardcore game enthusiast, he was saddened by the modern trend towards casual games.So, when a site claimed to be “for people who like to do things the hard way,” he just couldn’t resist. Thus, he was reincarnated into another world as Allen, playing on Hell Mode.This is fantasy light novel about Allen’s journey as a summoner.Reincarnated as a serf, he starts from nothing.His journey begins with absolutely no knowledge of the world around him, just like those games he played 10, 20 years ago.

In the kingdom of Veridian, Prince Lucien Damon is known for his charm and charisma. But his kingdom is facing economic ruin, and his father, the king, in an effort to alleviate the economic strain on his kingdom has arranged a marriage between Lucian and Prince Alexander Silver of the neighboring kingdom of Avaloria.In the kingdom of Veridian, Prince Lucien Damon is known for his charm and charisma. But his kingdom is facing economic ruin, and his father, the king, in an effort to alleviate the economic strain on his kingdom has arranged a marriage between Lucian and Prince Alexander Silver of the neighboring kingdom of Avaloria.