And i've explained to you already that the evidence lies in the secret ending of BBS, not to mention the struggle seen within Terranort before and after the final battle with Aqua. The will actually is a substance of KH because that is what gives a nobody a humanoid form, this doesn't rely on thoughts and actions alone considering the KHuniverse :/
Couldn't that just be that any being, regardless if they are complete or not, can have will? Again, my example of SoD and Xemnas still stands. Both still had strong wills, even though they were respectively heart and body/soul.
Just let me ask, at what point, exactly, did you start disagreeing with me?