Japanese names meaning "Number One"

Names for boys and girls whose kanji carry this meaning

員 Employee; Member; Number; The One In Charge

いん

Boy

さくらだいん · Sakurada In

Girl

いそむらいん · Isomura In

壹 Number One

いち, いつ / ひとつ

Boy

ちはらいつ · Chihara Itsu

Girl

えんざんいつ · Enzan Itsu