Maru

Written in hiragana, Maru is a female name meaning 'round'. Admittedly, finding the name 'Maru' on itself is highly rare, but variations with -yo 'world', -ko 'child', or -mi 'beauty' exist. In addition, more uncommon suffixs are sometimes added to 'Maru', especially in modern times - Maruka, meaning 'round fruit or flower', Marui meaning 'round boxes' or even Maruya 'to be round' are possible names.
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Means "circle" "full(month)" or my personal favorite meaning "perfection; beloved"