Illya's enjoyable summer isn't over! After changing into a yukata, she joins the usual gang and heads to a local festival. As Illya enjoys yo-yo fishing and lottery drawings at the festival, she realizes something dire--she was supposed to wear underwear beneath her yukata! A great tragedy befalls upon her!
When you're wearing a yukata, 
you're not allowed to wear underwear.
Ist dir klar, dass man unter einem
Yukata keine Unterwäsche trägt?
Al usar yukata, no tienes 
permitido llevar ropa interior.
Al usar yukata, no puedes llevar ropa interior.
Tu savais qu’il existe une règle
dictant d’être nue sous un yukata ?
Quando si indossa uno yukata 
non è permesso indossare biancheria intima.
Quando você está vestindo uma yukata,
 você não pode vestir roupas de baixo.