I became a god by treasure hunting after arriving 500 years early - Chapter 5 - 3: Triggering Another Milestone

A man transmigrated as a side character in some lonely web novel that earn nothing more than some power stones and fake ahh.. reviews from the author's friend. He changes the fate of that side character, he refusing the offer of dark powers that the character was originally supposed to accept.After rejecting the dark power, the God of Fiction from the web novel departement appears and.....*****[ Cringe probability ] : 99.99%

“Hmph, my dumb big sister is in danger!” A mischievous grin spread across his face. “Hehehehe... this gives me the perfect excuse to finally use this treasure I’ve acquired but never bothered with!” He rummaged through his belongings, carefully selecting various items. “A bit of this... and this... and a dash of this.” Boom! The explosion of energy sent a ripple through the air as he laughed maniacally. “Hahaha! It’s done! Now, all I need is a compatible host for it.” Years later... “Did I overdo it?” he wondered in awe, watching as his creation wreaked havoc, conquering world after world with ease, as though stealing candies from children.

Growing up in the slums, deprived of freedom, being enslaved by his parents and thugs, all Lucifer wanted was a life of freedom, a life that he could do whaver he wanted, not being ordered by anyone.And then luck came to Lucifer when he awakened the system, and even luckier was that he was able to raise his Destiny Rank to Unpredictable.But in return...he was turned into Freedom's Most Loyal Slave