I don t understand exactly what you mean with your Question

but i think you mean this:
You can Use:
SELECT @char_gubun = CASE @v_byPCClass
WHEN 0 THEN 'A'
WHEN 1 THEN 'B'
WHEN 2 THEN 'C'
WHEN 3 THEN 'D'
WHEN 4 THEN 'E'
WHEN 5 THEN 'F'
WHEN 6 THEN 'G'
WHEN 7 THEN 'H'
WHEN 8 THEN 'I'
or
SELECT @char_gubun = CASE @v_byPCClass
WHEN 0 THEN 'A'
WHEN 1 THEN 'B'
WHEN 2 THEN 'C'
WHEN 3 THEN 'D'
WHEN 4 THEN 'E'
WHEN 5 THEN 'F'
WHEN 6 THEN 'G'
WHEN 10 THEN 'H'
WHEN 11 THEN 'I'
(Depending on which PCCLASS you use)
If your exe uses 0A and 0B you have them on class 10 & 11 !!
Concerra on Class 7 works fine for me :-)
and don t forget to add the [DEV]CONCERRA & [DEV]SEGEURIPER Chars
to you user_character.dbo
then it should work i think :-p