I'd love to have your permission to translate this manga, I'm from a Vietnamese translator group. Thank you very much!

You mean permission to translate the english version?

@phoenix3934: That tends to be the case. Having translators from English tends to be a bit more plentiful than from Japanese.

@Alice Blackstar: Go ahead.

Do we need to keep your credit?

Yes.

Yes, preferably.
But in all honesty it doesn't matter in the end, so do whatever!