Saku and Yukichi receive invitations to Yume's birthday party. Yukichi convinces Saku that it'll be completely fine to attend since it'll be a costume party. However, will Saku and Yukichi really be able to fool all the parents and children there?!
But I wonder why that person 
always wears a cat costume.
Aber warum würde jemand
immer ein Kostüm tragen?
Pero ¿por qué irá siempre disfrazado?
Pero ¿por qué irá siempre con disfraz?
Mais pourquoi le porte-t-il
tout le temps ?
Però, perché va in giro travestito
anche nella vita di tutti i giorni?
Por que será que ele sempre usa
uma fantasia de gato?
Но почему этот человек
всегда ходит в костюме кота?