Koihime†Musou: Gunyuu, Seitoukaichou no Za wo Neratte Aiarasou no Koto – Ato, Porori mo Aru yo! 6.61
Other Name: Koihime?Musou OVA, 恋姫†無双 群雄, 生徒会長の座を狙って相争うのこと ~あと, ポロリもあるよ!~
Summary: OVA of Koihime Musou in a school environment, where factions of 4 individuals fight off in school athletic events to obtain the positions of Student Council seats.
