|Debut:||Manga Volume 1, Anime Episode 1|
|Age:||Unknown (probably 12 years or older)|
Midori made his debut in both the first episode of the anime and the first volume of the manga. Midori is a student of the Seven Voices Academy. He was appointed by Ritsu Minami to recruit Ritsuka Aoyagi as one of Ritsu's students. After failing twice in completing the task, Midori and Ai were taken off the assignment and sent back to academy for additional training.
Breathless later appears in volume 6, where they welcome Ritsuka at the Seven Voices Academy.
When Youji Sagan thanks Ai for the band-aid she gave him, Midori appears to get jealous and tells them to not be so friendly with one another.
In an extras chapter, Midori tells Ai that learning English is very important. They then begin to discuss having their wedding in Hawaii.