Sora and Riku is going to learn how to do asexual reproduction because they've discovered that they are plants. (Didn't you notice?)
So they don't need a girl to help them out in reproducing children, because they are plants.
Kairi isn't a plant so she can't be with Sora, duh.
Where did you guys get the idea that it would be an good idea that they should get together? A plant and a person together in one relationship, no way that would work.
At least they can be friends though, I guess Kairi doesn't mind hanging around with a bunch of peasant plants.
Sora and Riku is going to learn how to do asexual reproduction because they've discovered that they are plants. (Didn't you notice?)
So they don't need a girl to help them out in reproducing children, because they are plants.
Kairi isn't a plant so she can't be with Sora, duh.
Where did you guys get the idea that it would be an good idea that they should get together? A plant and a person together in one relationship, no way that would work.
At least they can be friends though, I guess Kairi doesn't mind hanging around with a bunch of peasant plants.