The grand event for elementary schoolers is finally here--Summer Break! In preparation for the long-awaited trip to the beach, Illya and the others go with their classmates to pick out new swimsuits and carry on in front of the skimpy clothing♪ While they're out, Kuro runs out of mana and calls Illya away to an empty stairway platform. But Mimi catches sight of them in the act?!
I never imagined the three of them were 
in such a deep, complicated relationship!
Dass die drei so eine tiefgreifende,
komplexe Beziehung haben!
¡Nunca pensé que esas tres tuvieran 
una relación tan profunda y complicada!
¡Nunca pensé que esas tres tuvieran 
una relación tan profunda y complicada!
Qui aurait cru que leur relation
était si sérieuse et complexe ?
Non avrei mai pensato che loro tre avessero
 un rapporto così complicato e profondo!
Eu nunca imaginei que essas três