A “nukeninja” is a historical term used to refer to ninjas who ran away from completing their work.
The description in the update reads:
“A man who ran away from his ninja village a year ago and has been on the lam ever since. In that time, he’s seemingly put on weight and while he has a love of video games, he holds Compile Heart in such contempt that he acts as though the company doesn’t exist. He does promotional work, but only begrudgingly as a matter of business. He also despises singing and dancing greatly. Though he can still perform ninja arts, he’s ultimately a buffoon of a ninja not to be taken serious. (But he can still do body split and substitution arts just fine.)”
The countdown will end in six days.