We all know about the Keyblade's connection to the heart, but a friend and I debated last night about wether or not the keyblade also has a connection to the soul, with me believing it does and my friend believing it does not. Ultimately my friend conceded and I won the debate, but for the sake of fairness I do want to get other people's opinions on the topic. The idea is that people can use a keyblade if they have the soul of a keyblade wielder, even if they don't have a heart, with my evidence mostly revolving around The Lingering Will and Roxas, both beings that have no heart but do possess the soul of a keyblade fielder, Terra's soul and Sora's soul respectively. There's also the case of The Vanitas Remnant which, while it is an unversed, is described as being "A physical manifestation of what remained of Vanitas's powerful thoughts and feelings." Very similar to what The Lingering Will is, so I do believe it's entirely possible that after he lost his heart and body, Vanitas's soul created an Unversed to be it's host and thus giving it the ability to use a keyblade, however that is 100% speculation. Any other opinions, for or against?