Long ago when he was on Earth, he was known as the best MMORPG gamer in history, and broke the world Guinness record for being undefeated for ten years straight. The game he played was called the "Sword & Dragon Universe" or in short "SDU".

His ranking was #1 and although he's the world best gamer, but he's known to be a very toxic person who enjoys laughing at the noob as he tramples them. His character name in the game SDU is called "PrimeDragon".

Due to his toxic behavior, one day he was killed by some people who hated him in real life. After his death, he was then reincarnated as Microorganisms in another world called "Zxion" located in another universe. From there, he slowly evolves from a tiny Bacteria to a full mighty Dragon.

Author note: This is my first novel, so please go easy on me lol. This your Isekai comedy novel.

I don't own this book cover. All credits goes to the original creator: https://convergence-series.fandom.com/wiki/Arch_Demon_Akibahara