Hentaigana character sometimes listed as WU. Likely from man'yōgana 汙, unless it is merely a simplification of the character shown in <a href="//commons.wikimedia.org/wiki/File:%E7%B4%86_kana.svg" title="File:紆 kana.svg">File:紆 kana.svg</a>, in which case it would be from 紆. See <a rel="nofollow" class="external autonumber" href="https://kobunworld.blog.fc2.com/blog-entry-5.html">[1]</a>.
<a href="//commons.wikimedia.org/wiki/User:HarJIT" title="User:HarJIT">User:HarJIT</a>, but derived from <a href="//commons.wikimedia.org/wiki/File:Japanese_Hiragana_kyokashotai_HO.png" title="File:Japanese Hiragana kyokashotai HO.png">File:Japanese_Hiragana_kyokashotai_HO.png</a>
2020-06-21
<a href="//commons.wikimedia.org/wiki/File:Hiragana_WU_2.png" title="File:Hiragana WU 2.png">File:Hiragana WU 2.png</a>, itself a derivative of <a href="//commons.wikimedia.org/wiki/File:Japanese_Hiragana_kyokashotai_HO.png" title="File:Japanese Hiragana kyokashotai HO.png">File:Japanese_Hiragana_kyokashotai_HO.png</a>