Tolong jelaskan mengenai Asal usulna dari U (kana) dalam bahasa sunda

Boh う jeung ウ asalna, ngaliwatan man'yōgana, tina kanji 宇 (dieja u tur haritna rohangan).

Scaled-down versions of the characters (ぅ, ゥ) are used to créate new morae that do not exist in the Japanese language, such as トゥ (tu). This convention is relatively new, and many older loanwords do not use it. For example, in the phrase Tutankhamun's cartouche, the recent loan cartouche uses the new phonetic technique, but the older loan Tutankhamun uses ツ (tsu) as an approximation: