One Piece: Sanji's Invisible Black

A little premise: What would happen if a successfully genetically modified Vinsmoke Sanji transmigrated into the world beside the Sanji who never underwent successful modification? [Warning! Warning!] Please note: this story centers on the Sanjis. If that’s not your thing, don’t come in. Turn left and head out. Thanks for understanding. Stealth Black: That’s a joke straight out of hell. You want me to stay beside this soft-skinned, fragile, slender little guy, whose eyes are full of useless emotions?! Just thinking about it is enough to kill me. Sanji: ...Ha! You think I want to be with you?! And how could I possibly be anything like you described?! Luffy: Wow! This black Sanji just praised all of Sanji’s good points! Geez, I thought you two were fighting. Hahaha! Zoro: True. But the idiot cook is a crybaby? That’s pathetic. Hm? Got a problem with that? Come fight me, curly-brow! Nami: You two, stop it! And you, Black Sanji: now that you’re on my ship, you’ll have to pay rent. Robin: How interesting. But, Mr. Stealth Black, “soft-skinned” and “slender” are both compliments. [Sanji x Sanji] [No other pairings] In the other world, Sanji’s modifications were successful, so his hair is black. He is cold, sharp-tongued, bloodthirsty, and brutal. But since his physical condition is linked to the Sanji here, only Sanji can keep him in check. Having experienced Sanji’s childhood, he is furious with the Vinsmoke family and shows special affection (bullying) only toward Sanji.