Self Insert Into The Omniverse With A System: Eternal Harem

What happens when someone with Tony Stark level Intelligence is transmigrated Into a young Liberian around his age with his name, Into a world of Swords & Magic? Who knows~ That's why you here~ *A/N:" Ahem! They're here for the cover..."* ...I know...(Dies Inside) ** - [ I own nothing, but my own creations ] - - [ Tags: Genshin Impact ~ Fate/Grand Order ~ CYOA ~ Forgotten Realms ~ Tensura ~ ] - - [ Extra Tags: Male MC ~ Handsome-Beautiful MC ~ Harem ~ Stronger To Stronger ~ Psychopath & Unpredictable MC ~ WishFulfillment ] -