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!
Huh? Ruby?
Hä? Ruby?!
¿Eh? ¿Ruby?
¿Eh? ¿Ruby?
Eh? Ruby?
Hein? Ruby?