[What a question. Matsui's quiet for a second, not because he really has to think hard on his answer so much as because it comes a little too easily.

When he answers, it's honest, even if it certainly highlights the fact that he's far from human himself.]

I suppose there is. I have seen many changes in my time, and many tragedies beyond that... But there are some that have stayed with me even after so many years have come and gone. Rather than being a "human" experience, perhaps it is merely something that those with a "heart" must endure.