Hi. I'm just repeating myself in case you missed my post. The S2 host's name is too long, by two characters, and that's why the characters "S2" are missing, and there is a trailing space, so causing the bug Wabs reported.
All you need to do to fix it (and this will allow the join program to work) is remove the ^J in the middle of the string. Leave the first ^J, that's ok. the second one is not needed because you are already in the Japanese code page, for the first word.