|Debut:||Manga Volume 1, Anime Episode 1|
|Age:||Unknown (probably 14 years or younger)|
Midori Arai (Sacrifice)
Breathless later appears in volume 6, where they welcome Ritsuka at the Seven Voices Academy.
Ai once gave Youji Sagan a band-aid for a cut on his face. When Yoji thanked her later on, Midori seemed to get jealous.
In an extras chapter, Ai and Midori discussed the need for English. They decided that they would have a wedding in Hawaii.