From Japanese 晶 (aki) "sparkle", 明 (aki) "bright" or 秋 (aki) "autumn" combined with 斗 (to), which refers to the constellation Ursa Major, 翔 (to) "soar, fly", or 人 (to) "person". Other kanji combinations are possible.(Information from name #5318 originally submitted by user dreadfulxsorry)