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!
There are still things you 
should and shouldn't do!
Es gibt Sachen, die macht
man einfach nicht!
¡Pero no puedes hacer esa clase de cosas!
¡Pero no puedes hacer esa clase de cosas!
Peut-être, mais ça se fait pas !
Ci sono cose che si possono fare
 e cose che non si possono fare!
Ainda sim, tem coisas que se
 faz e coisas que não se faz!