Hello,
I have submitted the suggestion for 4th Hokage Minato as a fireworks festival ninja. Please keep in mind that just submitting and requesting a ninja does not guarantee they will be in the event, as some ninjas are more powerful than this event warrant. Thanks and good luck!

@brensonlee Edo 3rd Raikage was already a fireworks festival ninja, as Bogotor pointed out. He probably won't be one again. Thanks!