Superheroes are many times seen as a "Western" concept, namely because of the success of characters published by Marvel Comics and DC Comics. The superhero comic book genre was itself started by DC's Superman, who was created by two young men from Cleveland, Ohio. There have since been several Japanese heroes in anime and manga, but the character who's perhaps the first "true" superhero actually predates the Man of Steel himself.
Source：https://www.cbr.com/first-japanese-superhero/
