It scares me how willing you are to torture a Four year old little boy. 8(
Let us make one thing plain, Sora and Ven exist at the same time. Sora on his island, Ven in his... castle place. They meet once [I think. Interpreting these scenes is hard. D:]
How can Ven basically be Sora when Sora is around while Ven is around? Logic says no way to this, or most theories that say Sora is derived from Ven.