ZeshinX
Adventurer
"Front Line Ninja Warrior" is about as far from a ninja as you can get without going "responsible banking pirates"
Such are the joys of fantasy, anything is plausible and ridiculous at the same time...which way it leans is entirely subject to personal taste.
I absolutely love 80's ninja movies, despite the fact I also find them utterly absurd. To see grown people running around in sometimes brightly coloured pajamas, in broad daylight, with a sword strapped to their backs and weapons hidden in places they have no plausible ability to be hidden in....laughably absurd but hella fun to watch (and play!).