九きゅう歳さいkyuusainine years oldBreakdown of kyuusai九きゅうkyuunine〜歳さい〜saiyears of age (counter)Elon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese nowYour questions are stored by us to improve Elon.ioYou've reached your AI usage limitSign up to increase your limit.