Quick answer
Aoi is a boy/girl name.
Meaning and history
From Japanese 葵 ( aoi ) meaning "hollyhock, althea", 蒼 ( aoi ) meaning "blue, green" or an adjectival form of 碧 ( ao ) meaning "blue, green". Other kanji with the same reading can form this name as well.
Notes and context
Usage: japanese | Japanese Hiragana: あおい; Japanese Katakana: アオイ