Yuji Itadori is the best Black Flash user in JJK, hitting multiple consecutively in the final battles. Gege invented the concept of Black Flash as Yuji's finishing move to make him more unique ...

In fact, certain JJK characters are iconic and known all over the world, such as Gojo Satoru. There are also other characters that are incredibly popular, such as the protagonist, Yuji Itadori.