Trapped in a Crazy World as an Extra

"I got thrown into this godforsaken world?!" The infamous web novel Chronicles of the Seven-Colored World ran for over 800 chapters, gaining notoriety for being an absolute mess—with absurd plot twists, overpowered monsters, and yandere heroines who kill the protagonist on a whim. And now... I've reincarnated into that very world. As who? Some nobody named Rudian. A literal background character with zero plot relevance. But then I stumbled across two game-changing companions: a weird, googly-eyed monster named Adi, and a cursed sword known as Diablo. If this world wants to be crazy? Fine. I'll go full crazy with it. It's time for the ultimate chaotic run, and this time, the so-called "extra" is flipping the whole story on its head. (Source: Kakao Entertainment Corp., translated)