𛄟

Etymology
From.

Usage notes

 * In modern Japanese, old evolved into, and is written as う in hiragana and ウ in katakana. The sound  was reintroduced later and is written as  in hiragana and  in katakana - however most speakers pronounce this as a long  sound.


 * 𛄟 is a retrospective invention. It was not actually used in the ancient Japanese literature (which uses man'yōgana instead) and thus is not included in the historical kana orthography.
 * In Meiji era grammar books, 𛄟 was sometimes used to spell ワ行下二段活用 verbs.
 * In ancient times, all は行 sounds were pronounced /pV/ (“V” being any of the Japanese vowels). Then, during the Nara period, it shifted to /ɸV/ when it was in the middle or at the end of a word. Between the Heian and Kamakura periods, /ɸV/ changed to /βV/→/β̞V/→/V/. Some older grammar books used 𛄟 to show this in ハ行四段活用 verbs, ハ行上二段活用 verbs, and ハ行下二段活用 verbs (e.g. as.