[discussion] Is there some professional wrestling promotion that doesn't involve 'kayfabe'?

This is just a minor nitpick okay,Now we all know that professional wrestling involves wrestlers portray as face vs heel,good vs bad,black vs white and stick with storytelling or 'kayfabe' as wrestling term calls it and it is considered 'sports entertainment' as WWE calls it. But there is one doubt what happens if there is an only professional wrestling promotion that doesn't do Kayfabe or storyline and no face and no heels .Just two guys fighting similar like the rules in boxing or mixed martial arts ,Is such organisation really exist and what happens if professional wrestling doesn't have 'kayfabe'?