Search gender: all male female カユ Japanese Boy Names Variations. 1 names found. gender: all male female Name: kayu Katakana: カユ 0 Kanji: 可勇 Meaning: 可Can. Good. Can be forgiven. Good point. I can do it. Should do. Listening. 勇Brave. Strong. Vigorous. Spirited. Decisive. Innocent. Exuberant. Soldier. Very strong soldier. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > カユ Japanese Boy Names Variations.