What does ni kera mogo mean in English?

"Ni kera mogo" doesn't make sense as a phrase in any commonly spoken language. It's possible that:

* It's a misspelling or a typo. Could you double-check the spelling?

* It's a phrase from a specific dialect or language that's not widely known. If you can provide more context or information about the source, it might be possible to decipher it.