My wife is longterm resident

Good day

My wife is 4th generation nikkeijin and living in japan almost 4 years going to 5 years, she is a long term resident, my question is can she apply a coe or visa for spouse of long term visa? Is it possible so we can work together in Japan?

Thank you! Hope you can read and reply guys.

There is no "spouse of long-term resident" status. You can try to apply for LTR status for yourself.

But is it possible that she can apply me a coe to work in japan? So we can live in japan also

The only way for you to come as a dependent. So your wife should apply for dependent Coe but it depends on your wife income and taxes if she earn more than 3 million and paying taxes chances of approval is high but if she earn less and not paying taxes there is 5% chances to be approved. And 2nd way is come as tourist visiting your wife and after apply for change of status from tourist to dependent best of luck.

I think she is not earning 3 million yen annually, but she is paying all her taxes at the right time. What do you think sir? Is there a high possibilty for me to grant coe?

But is it possible that she can apply me a coe to work in japan? So we can live in japan also

Like I said, you can apply for LTR status (not "Dependent"!) in the usual ways (CoE+visa or change of status). As is usual, your wife can apply for the CoE on your behalf.