Male:
* Kaito (海斗): Meaning "ocean fighter" or "sea warrior"
* Kenji (健二): Meaning "healthy second son"
* Kenta (健太): Meaning "healthy and big"
* Keigo (圭吾): Meaning "precious warrior"
* Kohei (耕平): Meaning "to cultivate peace"
* Kyohei (恭平): Meaning "respectful peace"
* Kazuki (和樹): Meaning "harmonious tree"
* Kenzo (健造): Meaning "healthy and strong"
* Kaito (海斗): Meaning "ocean fighter"
* Kazuya (和也): Meaning "harmonious also"
Female:
* Kaori (香織): Meaning "fragrant" or "sweet scent"
* Kiko (紀子): Meaning "noble child"
* Kyoko (京子): Meaning "capital child"
* Kana (佳奈): Meaning "good kana"
* Keiko (恵子): Meaning "fortunate child"
* Kirara (きらら): Meaning "sparkling jewel"
* Kanako (佳奈子): Meaning "good kana child"
* Kanae (香奈恵): Meaning "fragrant kindness"
* Kumi (久美): Meaning "long beauty"
* Kaede (楓): Meaning "maple leaf"
Unisex:
* Kai (海): Meaning "sea" or "ocean"
* Kaito (快斗): Meaning "fast thief" or "quick-witted"
* Kyo (京): Meaning "capital"
* Ken (健): Meaning "healthy"
* Kazu (和): Meaning "harmonious"
Note: These are just a few examples, and there are many other Japanese names that start with K. The meaning of a name can vary depending on the kanji used to write it. It's always a good idea to research the meaning of a name before choosing one.