How has Japan changed?
Japan has changed a lot, since there is no more Shogunate
anymore, they used to have death penalties including swaing the
body in half and also boiling a person to death.
Plus back when there were samurais they could test out their
katana (Japanese sword) on anyone that wasn't important, if they
killed someone important or commited a very bad crime that would
have to commit Seppuku which is a type of suicide when the stap
them selves in the gut with their katana.
Hope I answered you question :D