|Name in Japanese||月アルフア|
|Romaji Translation||Kurotsuki Arufa|
|Nickname/s|| Alpha Omega|
|Voice Actor (Japanese)||Aya Suzaki|
|Occupation|| Magical Girl
When Kirino was asked by Kuroneko why Meruru killed Alpha Omega in one episode if the theme of the series is friendship, Kirino explained that Meruru had to kill her companion who was turned evil prior to the episode. Kirino revealed that she is revived later in the series and back at Meruru's side.
Alpha Omega (アルフア・オメガ ) is Meruru's sidekick in Stardust☆Witch Meruru. Her alter ego is Arufa Kurotsuki (黒月あるふぁ, Kurotsuki Arufa), a grade four student who is Meruru's best friend. She is sometimes referred as Al-chan (アルちゃん, Al-chan).