Gohan's Beast Mode - It Doesn't Matter Who ... off into the immensely popular Dragon Ball Z, which followed Goku as an adult and featured high-intensity battles and Goku's never-ending search ...

Goku loves Gohan, that isn't what's in question ... Gohan does still train on occasion with Piccolo as an adult, but he doesn't take it as seriously, which frustrates his teacher, but Piccolo ...