Whatever it is, it's not something to be crying over.

( He can't really think of many memories of his that are, to be honest; what comes to mind first is that she might have seen seen something to frighten her, or something unjust that's happened in his lifetime. So far that seems to be what the thing has favoured, and he doesn't expect her to have seen something so personal. So, with a sigh: )

I had a duty to fill as a member of the Shinsengumi, you know.