~Yes You! You are next!
That right there just made my day^^
You haven't actually watched this show if you think it has that much in common with the Lion King :/
The Simba/Kimba thing is just a coincidence. They happen from time to time.
Eh... for one thing fiction borrows from previous works all the time. Read about the monomyth for details on that.
Second, I think the Lion King could very well exist outside of Kimba. It might have been different, but I think it would still exist. Hell, my money would be on that it would not even be -that- different. If Hamlet wasn't written on the other hand...