Koto (hiragana: , katakana: ヿ) is one of the Japanese kana. It is a polysyllabic kana which represents two morae. Both the hiragana and katakana forms represent [koto]. is a combination (ligature) of the hiragana graphs of ko (こ) and to (と), while ヿ originates from the Chinese character 事.

koto
hiragana katakana
transliteration	koto
hiragana origin	こと
katakana origin	事

The katakana koto is as a shorthand used in shinkatakana (真片仮名) (an obsolete writing style that exclusively used katakana instead of hiragana).^[1][2]