O.k. - maybe this will help identify the system...
It says that for the 6th kyu that I need to learn the 4 main points/rules from Koichi Tohei. - my wife helped translate from the requirement sheet for me - however the 4 points are listed.
who is Koichi Tohei? Seems like I heard his name. - how does this relate to aiki main system?
Koichi Tohei was the founder of the Ki Society. I don't want to write a long history here, but you can go to aikidojournal.com and look it up for yourself. You may be at a Ki Society dojo and you really need to communicate with your instructor.