The numerical differentiation of the abbreviation
IKO (International Karate Organisation) as used by various Kyokushin
organisations is my invention for my convenience
and historical continuity i.e. IKO(1), IKO(2), IKO(3), IKO(4)...
The numbers are not meant as an indication of their precedence in
their claim to the use of the name and abbreviation.
Since there are several groups that chose to use that name for
their organisation, the reasons for which I do not care to debate,
they are simply numbered in chronological order of their formation.
Some people prefer to use the current kancho's name as a suffix
to the IKO. This wouldn't be a problem if they never changed. They
do however seem to change quite often, and in some cases they even
start up new group e.g. Shihan Nobuhito Tezuka, who first
led what I call IKO(3) but has since left them to start IKO(4).
This means that there have been two IKO-Tezuka in existence, and
newcomers to the scene would think that these were the same group,when
in fact they are not. Hence, the numbers instead.
If you choose to use this system, feel free to do so. If not feel
just as free not to.
The expressions "Kyokushin is Kyokushin" and "One
World, One Kyokushin" are also of my invention, but the concepts
behind them are not, and as a consequence, I have no problem with
anyone using them for the betterment and propagation of Kyokushin.
Don't abuse it.