So i decided to read the xehanort reports in bbs and it talked about the keyblades from the realm light and darkness and saying that they were counterparts of eachother. So i realised that King MIckey's keyblade and Sora's keyblade are pretty much opposite of each other and i was wondering which one would be the keyblade from the realm of light and which one is from the realm of darkness?

If I recall, it was Donald to be the protagonist.

 

It was kinda both ! The following is from Kingdomhearts.wikia.com

Although Square Enix originally wanted Mickey Mouse to be the main protagonist of the Kingdom Hearts series, and Disney wanted Donald Duck as the protagonist, the role was eventually set as Sora, because Tetsuya Nomura wanted a human protagonist.

The reason why you see double keyblades in the keyblade graveyard is because the people making the game where lazy so they just put like 10 diffrent keyblades there but made it look like hundreds.

 

I know, I think i should have mentioned that!

I tought Sora was from light and Riku, not Mickey, was the keyblade of darkness. But now that you said, everything got right, the D from Mickey's keyblade must signify Darkness or Dark.

KK D = RoD

 

KK = RoL