カバレフ・スタニスラフマダー・サリィヴァン

Nicknamed Sully, he is an angel prince that was (supposedly) summoned from the moon by Akane. Sully was tasked by his father, the king, to help Akane resolve what is currently bothering her (the truth about her real parents) by the next full moon. Though he is 20, he often gets mistaken as a child, if not, a mid-teenager (Akane described him as "looking around 15-years-old). 

Not wanting to make Akane's peers suspicious, Sully had somebody from the moon world alter their memories, so he could better carry out his task. Because of this, those close to Akane are arranged to think that Sully is a distant relative of Akane's. Despite his complex and somewhat dignified method of speech, Sully is quite childish and slightly spoiled. However, Sully can be surprisingly obedient at times. He too, ends up helping out the eel restaurant as a waiter and delivery boy as part of his guise.