Yufuin's inspiration leads the Defense Club decides to go on a training camp to the ocean on . Meanwhile, the three student council members head to a beach resort in a limousine. The beach has bright sun and white sand, but there's something a little off about it. A strange feeling starts hovering around the group's members...
You're acting like I secretly used Naruko's toothbrush
Du benimmst dich, als hätte ich deine
Zahnbürste absichtlich verwendet...
Actúan como si hubiera usado 
el cepillo de Io en secreto
Actuáis como si hubiera usado 
el cepillo de Io en secreto
Vous avez l’air de croire
Ti stai comportando come se io avessi 
usato segretamente il tuo spazzolino
Vocês estão agindo como se eu
 secretamente tivesse usado a escova do Io