Villain Candidate

He has slept in the palace of a King and set foot in the prison of an Avenger. The young man from another world chases after that warm sky.

Can hope bloom from polluted soil?

Liu Daoxu: Kufufufu... Vongola, your body belongs to me.

Ju: *smiles peacefully* Say that again?

Sawada Tsunayoshi: Calm down, everyone! Don't do anything rash, or the world will be destroyed!!!

The world is so big. It wouldn't matter if we casually destroyed one Japan, right? :)

P.S. The protagonist isn't smarter than the author. He has a golden finger, but he isn't adored by everyone.

Premise: Learning to save or destroy the world.