一夜 かずや female given name or forename Also 一夜: いちや one night いちや Ichiya いよな Iyona かずよ Kazuyo 一夜かずや female given name or forename English JMnedict 1 Kazuya 漢字 kanji used 一 one, one radical (no.1) 1画 · JLPT N 4 夜 night, evening 8画 · JLPT N 3