If Axel didn't think it was real, then it probably wasn't. While Sora couldn't imagine what it was like to not have a heart (his memories of his brief time as a Heartless were vague and unclear), he got the feeling that if Axel really had gotten his back, he would have known it was for real without a doubt.
At least in Sora's case, his heart filled him with so much emotion and feeling for his friends, his situation, everything. He knew that some people were able to experience things in a more muted way, but having emotions was not something that could be faked.
When Axel mentioned that his heart was metal, Sora made a face. That just wasn't right. "It's not fair for them to try and... and..." He couldn't really find the right words, and just ended up sighing.
"I don't know. The heart is something special. It isn't right for them to try and pass off something they created as the real thing." Dr. Finkelstein had also tried that, and all it had resulted in was a monster Sora had been forced to defeat. The heart wasn't something that could be manufactured - it was more complex than that.
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At least in Sora's case, his heart filled him with so much emotion and feeling for his friends, his situation, everything. He knew that some people were able to experience things in a more muted way, but having emotions was not something that could be faked.
When Axel mentioned that his heart was metal, Sora made a face. That just wasn't right. "It's not fair for them to try and... and..." He couldn't really find the right words, and just ended up sighing.
"I don't know. The heart is something special. It isn't right for them to try and pass off something they created as the real thing." Dr. Finkelstein had also tried that, and all it had resulted in was a monster Sora had been forced to defeat. The heart wasn't something that could be manufactured - it was more complex than that.