Shin Koihime†Musou: Gunyuu, Minami no Shima de Bakansu wo Suru no Koto - Ato, Porori mo Aru yo!

真恋姫†無双群雄, 南の島でバカンスをするのこと~あと, ポロリもあるよ! ~

The story takes place at St. Francesca Academy. After the battle between the students ended, they all go to a southern island.