In Another Time

Or "If for whatever reason Nobu and princess had been the same age".
Or "Princess time-travelled to the past".

Um. Well.

According to what I read in history, when he was a teenage brat, Nobu is... kind of this weird fusion of Goemon, Sasuke, and Musashi (in other words, he's a hyperactive brat who has bad manners and is a womanizer). Just... just imagine that for one second. 

If you can't imagine that, just imagine the Nobu from the game, but without all the rage fits and killing people thing. He kind still acts like a teenage brat even in the game. All that changed in 30 years was that he grew bigger, has more hair, and is 100000x scarier. 

And yes, even his fashion sense has not changed. He's wandering around half-shirtless like that when he was a brat too and... really, who's complaining? 

I still prefer grown-up Nobu, tho. He's funnier BECAUSE he's diabolical and behaves like he doesn't even know how to act like a normal human being.