Marginal Prince: Gekkeiju no Ouji-tachi - Tokyo Merry-Go-Round
Genres: Boys Love, Romance
Type: Special, Episodes: 1
Aired: Jul 19, 2007
Studio: Tokyo Kids
Source: Visual novel
Rating: PG-13 - Teens 13 or older
Synopsis:
Keita and the other Marginal Prince are away from St. Alphonso Academy and meet each other in the city, where they meet Keita's sister.

Extra episode released with the 7th DVD volume.