Back about 15 years ago, it was a different world. But anime/manga has pretty much infiltrated mainstream culture and I don’t see why you can’t find jobs working in that style. I grew up drawing anime/manga, but when I went pro, I had to shift my style because, well, that was 1991 and people weren’t too friendly towards that style back then. But if you look at my concept design stuff, you can still see a heavy anime/manga influence.
I know lots of artists working in that style as concept artist, illustrator, comic book artist…etc. Shouldn’t be a problem at all.
You should really learn your basics before getting carried away with anime/manga stuff. You have to learn how things really look before you can learn how to effectively distort and stylize them. Every single anime/manga training school in Japan train students in the traditional stuff–they make you draw still life, plaster sculptures, portraits, figure drawing, traditional painting…etc. You can’t be a good artist unless you have a solid foundation. People who only learned by copying anime/manga artworks can be spotted from a mile away–they lack the proper foundation, and they will never be as good as the respected anime/manga artists, because those guys all have strong foundation in tradititional training.