Ok these are the reasons I think that the silver haired unknown has to be riku.
1.Same hair color. who cares if its longer and styled different.
2.Same boots as riku has at the end of CoM when he walks with mickey.(you can see this when sora falls to his knees)
3. sora falls on his knees in schock(?) when he takes off his hood.
4. its the same place where you see the unknown with the soul eater
Ok. now the following are me contridicting what people say about why he cant be riku.
1. He is t00 tall do0der. no he isnt riku is a year older than sora people can grow.
2. He doesnt have a bindfold. People just dont get that Asas And DD were CONCEPTS.
Yeah so i think its definatly him.... so you can argue with me now
1.Same hair color. who cares if its longer and styled different.
2.Same boots as riku has at the end of CoM when he walks with mickey.(you can see this when sora falls to his knees)
3. sora falls on his knees in schock(?) when he takes off his hood.
4. its the same place where you see the unknown with the soul eater
Ok. now the following are me contridicting what people say about why he cant be riku.
1. He is t00 tall do0der. no he isnt riku is a year older than sora people can grow.
2. He doesnt have a bindfold. People just dont get that Asas And DD were CONCEPTS.
Yeah so i think its definatly him.... so you can argue with me now