"I want to go back," eh...

Yes, he was crying that out over and over.

I was able to read his emotions at the same time...

...but he was filled with an extremely deep sadness...

So if we return him to the outside world, that'll settle his hash?

No, that probably won't work.

I don't think he started running wild because he came here, but that he came here as a result of his degeneration advancing.

It's only natural to think that, isn't it?

So he's literally searching for his home...?