[RadioKid]

Conversation in Japanese varies depending on the human relationship like as gender, elder/younger, business relations and how intimate they are.

As I do not understand the background of man1 and man2, I told you "MIE-NAI" as the least words. It sounds involving no information about the relation of two men. By saying "MIE-NAI", he close his mind like as conversation after quarrel.

In relaxed mood, he will say "MIE-NAI-NAA".
When he says "MIE-NAI-NE", he does not care what the other feel by the answer.
When he says "MIE-NAI-YO", he slightly blames the other implying the other knows he has not good sight.

And if the person who asked is elder or at high elevation person, he will say "(WATASHI NIWA) MIE-MASEN-NE", "(WATASHI NIWA) MIE-MASEN-GA" or else.