It's hard to say, my Japanese is very rusty, and Japanese characters often
have several pronunciations depending on the context. I did find several of
those characters in my kanji dictionary, but I couldn't make any sense of
them the way they're put together. In regard to the second picture, The first
four characters that appear in a square shaped formation are a mystery to
me. I'm pretty sure that the 2 large ones in the middle are the name of the
brand of knives, the region they're made or the smith himself, and the name
is probably pronounced Miyafumi, although the reading of the characters could
be something different like Kyubun or Kyumon. I'm pretty sure the last two
characters mean swordsmith or cutlery or something like that. So basically the
message on the knife is just "Miyafumi Knives," a simple brand marker.
That "Miyafumi" combination also appears in the first picture so they are
either made in the same region, or by the same company/person. I don't
think there's any kind of deep message on the blades, but if you're interested
in a more accurate reading of the brand name and a clarification of the
antecedent characters, you'll probably have to enlist the help of a literate
Japanese person
