OKOSO siblings
https://scrapbox.io/files/633c71e6bfb632001de0f36b.png
nishio.icon The first siblings we noticed.
named after Okoso-Zukin, Japanese traditional hood for winter.
https://scrapbox.io/files/633c7531bfb632001de0ffb9.png
御高祖頭巾とは - コトバンク
and then noticed we overlook some siblings like 20220919072144
2022-10-02 We start to create siblings intentionally
The first intentionally create siblings
https://scrapbox.io/files/633c72fcf73b7d001d905398.png
20221003181137
https://scrapbox.io/files/633cfba143565a001d1ca8a3.png