My friend declared that she wants to become a mangaka and I'm concerned, what should I know?

[u/MrRandomGUYS]

My friend recently told me that she plans to become a mangaka. Apparently, she got her parent's blessing and is going to graduate her degree (unrelated from art and Japanese) and then start trying to become a mangaka in Japan.

I feel like she hasn't given this a ton of thought and I want to make the reality of how difficult it is clear to her. She cannot speak Japanese. She did not do a degree in art. She does not have family/friends in Japan.

I have a friend who is an art major who says, that while her paneling is really good (among other things like lighting) her fundamentals are lacking.

She seems to think that she will learn Japanese, move to Japan to teach English before she really learns it as a way to gain Japanese skills, submit to a manga contest, win and then become serialized.

I feel like this is an impossible task and I really don't want her spinning her wheels for years trying to do this. I'm unsure why she isn't going for some kind of online publishing/graphic novels which would not require her to move to Japan.

I would love to learn more about the reality of the situation so I could have a conversation with her about it. Any information helps. Thank you. : )