This guy solostomps JewJewtsu Kikesen

[Poopless One]

 

[AsakangaHalo]

Generic artstyle
Looks AI generated

 

[Poopless One]

Looks AI generated

It isnt. Its from the early 2000s

 

[poorenglishcel]

So do i

 

[Poopless One]

So do i

Good.

 

[onyxorion]

Who's that and how does he beat jjk

 

[Poopless One]

Who's that and how does he beat jjk

That's Jio Freed. The main protagonist of an obscure early 2000s shonen manga called "666Satan" (or O-Parts Hunter if you live in the states).

As for how he beats them he severely physically stats them all and also by the end of the series he gains control over a universal weapon called "Shin"