Mai is cosplaying as Melonpanna from Soreike! Anpanman.
Anpanman's friend. Her head is made from melon bread. She is extremely softhearted, being caring and sensitive, and is sometimes clever. When she's in trouble, she usually needs Anpanman or somebody else to save her, or if there is no one available, she calls out for her sister, Rollinggirl. Sometimes she likes hanging out with Cheese. Her special attack, the Melo-Melo Punch, makes bad guys woozy with affection or awakens others from deep sleep.