A mystery means it ain't for ya ta find out, Hiyo-chan~. Ya would have ta do some investigatin', but that won't do ya much good here.

[He's just as much a stranger as anyone else, after all. Only one person knows now about how he was back in England... and he knows Snake won't tell her a thing.]

If ya won't forget, does that mean you'll get me somethin' for White Day?