Summer! Swimsuits! The beach! Illya and the others enjoy the beach to fullest, playing along the shore and celebrating their birthday in a beach hut♪ But the popsicle seller they encounter there turns out to be the fierce foe they fought a hard pressed battle against... And to make matters worse, Ruby adds a Love Potion that makes Shirou go crazy! Will Illya's desires come to fruition in an unexpected way?!
Those... Those are the devils who ruined 
my sister, Moriyama Nanami's, love life!
Diese … Diese Hexen haben meiner Schwester,
Moriyama Nanami, das Leben ruiniert!
¡Ellas... son los demonios que arruinaron la vida 
romántica de mi hermana, Nanami Moriyama!
¡Ellas... son los demonios que arruinaron la vida 
romántica de mi hermana, Nanami Moriyama!
À cause d’elles…
Quelle due... Quelle due sono i diavoli...
Elas... Elas...