(n)free and unbiased; fair and just; ruling or judging what's right is right and what's wrong is wrong; calling spade a spade
今までは「なーなー」で付き合ってきたけれど、今後は是々非々の立場で付き合うよ。 Up to now we've been taking a casual relaxed attitude toward our relationship but I want to start looking at us more critically.