Adventures of a Serpent Throughout the Multiverse [COMPLETED]

–Summary– An average guy gets chosen to be the Multiverse Serpent's apostle. Now, with the blessing of Jormungandr, what will he do? Watch as our protagonist visits different worlds, causing chaos to everyone and everything that's not a loved one! Chaotic Neutral or True Neutral MC. –Current and Future Harem– Ereshkigal (Fate/Grand Order) (Rushed Relationship) Nero Claudius (Fate/Grand Order) (Rushed Relationship) Artoria Pendragon (Fate/Stay Night) (Slightly Different. Read if you want to know more.) Jeanne D'arc (Fate/Apocrypha) Scathach (Fate/Grand Order) Kiana Kaslana: Void Drifter (Honkai Impact 3rd) –Worlds– 1st World: DxD with Fate characters. 2nd World: MCU. 3rd World: ??? –Notes– -Ignore the first R-18 chapter. I'll rewrite it later. -Ignore the Author's Notes. I didn't even know what I was doing back then.