Having traversed countless realms, can you possibly be as clever as me?

"Once I've transmigrated, I can do whatever I want. I'll either go insane or die. I don't need a reason to do good, and I don't need a reason to do bad. I'll do whatever I want!"
"A mad Sigma man never holds back; he's either causing trouble or on his way to causing trouble! What tolerance? You think you're smarter than me?"
Disguised as Odin, he descends upon an innocent girl on a rainy night overpass, kidnaps Jesus and Tutu in Jerusalem, forces two female protagonists to sell their souls to you using AI novels and illustrations, and floods Aincrad with numerous studio accounts...
He urinated into the Holy Grail in front of Heroic Spirits, impersonated Darth Vader to slaughter Zeon and establish the Galactic Empire, tricked young Harry Potter into drinking from the Fountain of Drowned Mother, peddled "Enchanted Story of the She-Wolf" throughout the galaxy, and carried out large-scale massacres of Celestial Dragons, ninjas, Death Gods, and many others.
In short, this is a story about a protagonist who, as a madman and the Fourth Calamity, does whatever he wants, constantly causing trouble in different worlds, and killing all sorts of annoying things!