What Do You Mean You Blew Up the Main God Space?

Lu Yushen discovers that he has transmigrated to the world of Campione! He decides to steal the protagonist's fortune and take the original protagonist's place in going to Sardinia to slay a god. But can someone tell me why there's a man standing at the Kusakabe family's door who looks like he walked straight out of a Hong Kong comic?

"Magnetic field rotation: nine hundred thousand horsepower! Army Fist: Army Tank Fist!!"

What the heck? Is this still Campione? The whole art style is different!