You can't _write_ in S-JIS :)

The fourn uses 'charset=iso-8859-1' so it won't display Japanese.
Well not always.

I read the meassge as;
KONICHI WA, **RU**NA*NO*OKINA*
SHI * KANSHASHI********NA*NO
CERUGA WA HIJYONI UTSUKUSHI.

* indicates broken characters....