This is the ONLY official youtube channel with the name NOHIRO.
I own this channel since 2006, and some impersonator claimed url and other lookalike nickname.
One of those recently upladed a banner with characters from the company i work for which is sketchy.
So to be clear on those I will get in touch with youtube to know more about how is it possible to get your channel name STOLEN 10 years after you created your youtube channel. In the mean time those copycats can enjoy the time they have :)