Japanese Insignia Help Please

[Rescue190]

Claimed to be WW2 Japanese Insignia. I do not have a reference book on insignia and Google search was not successful. Help to ID the patch is appreciated. Thank you for looking.
John

[Nick Komiya]

No, surely not WW2 Japanese, as the embroidery technique used for these patches was not commonly employed in Japan at that time, but only postwar.

Neither is the symbolism represented Japanese nor military.

The Kanji in the middle means "blue" and is used to refer to youths in both Japanese as well as Chinese cultures, so it could be from some postwar boy scouts-like group.

[Rescue190]

Thank you Nick. At least I now know why I could not find any info. Much appreciated.
This armband is with the insignia. Might explain better. This is also not military to my knowledge. I put the pen on it to hold down the fold.
John

[chen]

The upper row of Kanji means Special equipted protection group
The lower row means rescue section

[Nick Komiya]

防護団 was the pre-1939 predecessor of the common Civil Defense Organization. The prefix, 特設 means specially organized. However, the left to right writing direction makes no sense for pre-1939 Japan, adding to the probability that it is early postwar, matching the embroidery style of earlier post item.