Last name オナカ (オナカ ) , around the world, is an extremely rare surname. Much more frequently, オナカ is the forename as well as the last name.
Onaka
アヤミ, アキコ, ヒロシ, ユウコ, and ジュンイチロウ
) , around the world, is an extremely rare surname. Much more frequently, オナカ is the forename as well as the last name.