Small katakana wi, a reduced-size form of the obsolete wi kana, used in historical or specialized Japanese writing.
10 characters in the Small Kana Extension Unicode block.
U+1B132HIRAGANA LETTER SMALL KOU+1B150HIRAGANA LETTER SMALL WIU+1B151HIRAGANA LETTER SMALL WEU+1B152HIRAGANA LETTER SMALL WOU+1B155KATAKANA LETTER SMALL KOU+1B164KATAKANA LETTER SMALL WIU+1B165KATAKANA LETTER SMALL WEU+1B166KATAKANA LETTER SMALL WOU+1B167KATAKANA LETTER SMALL NU+1B168KATAKANA LETTER SMALL ARCHAIC YE