Yes.... Zuzu had an old friend....

Someone he actually didnt get annoyed with.
Well since its just a sidestory thing here.... His friends name is.... well when i get the comic made you'll know....

This guy is kind of like Zuzu the difference being that Zuzu is hotheaded... and the other is calm.... They basically acted more like brothers more than anything....

What happened for them to not be friends? Well one being Zuzu went off to train with Itachi.... another.... well... that will be a surprise i guess you can say.

But this is a bit of my own little creation.... so enjoy.