[MMM]

The game world is completely different from the manga world. I am not an expert, so I won't pretend to know, but my guess is you are thinking more about character design than being an actual CG animator.

My suggestion would be DRAW DRAW DRAW! Build up a portfolio and communication skills. Practice listening to people, and try to draw characters you read descriptions about (like from novels). A character designer needs to be able to work with a team, and bring the game designer's vision to life. The nice thing about that field (and maybe what your teacher was trying to say) is that games are made all over the world, not just in Japan, so it's an easier field to break into than manga or anime.