[Humanity? Just what did this guy do to get immortality?]

...If?

[It was rare that he opens up about his powers because it didn't usually matter. He was old and can't die...it was sad but he's used to it. What he didn't expect was to hear about a demon.]

That sounds dangerous for sure, Shino...That must be a heavy burden.

[He can understand that burden in some ways but not the same. So he wouldn't tell him that they wee different but similar in ways.]

Pain is fine...it hurts more to feel others leave. [Without thinking he starts to trail off. Physical pain was bad but other things hurt much worse.]