umadbro?
The link's been posted many times but why not:
You must be registered for see links
Many words don't translate directly to english from Japanese. I don't know Japanese but just using simple deduction I come up with this:
Katon means "Fire Technique" or "Fire Style"
as
Suiton means "Water Technique" or "Water Style"
this seems to indicate that the common part of either languages correlate i.e.:
*ton means "* Style"
this leaves:
"Ka" meaning "Fire"
and
"Sui" meaning "Water"
at least when used as a prefix
"Kaenjin" begins with "Ka"
which to me would indicate that it is related to fire.