Many years ago, a cartoonist from Spain that we know as Tablos made a drawing in a contest that was Goku ssj5 and he wrote DB AF, basically that's where that fanfic concept was born.
Years later Toyotaro took that design and name and made his Dragon Ball AF fanmanga, that made Tablos upset especially because Toyotaro was chosen to make Dragon Ball Super and a meme was made with his phrase "Le falta ESENCIA" but over time he matured, he went from being a lolcow to a famous dragon ball fan in Spain and Toyotaro liked a drawing he made of Goku ssj5.