how will be the relation of roster female n male rat?

They will be attractive to each other at first and later the enthusiasm will calm down. Then they will find each other's troubles and they will find it hard to handling their difficulties in life.Rat is creative, shrewd and a bit manipulative. Rooster often feels Rat isn't living up to their potential, and they are not shy about letting Rat know about it.
However your pair combines a rooster female and a male rat, there is a chance for you to successed on your relationship. If both of you work on your relationships, your life will be happy.