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?!
By mother, do you mean 
Chief O-Orizuka's mother?
Im Zimmer Ihrer Mutter?
D-Die Mutter meines Chefs wohnt hier?
¿Su mamá?
¿Madre?
Votre mère ?
Sua madre?
Mãe... Então, a mãe do chefe Orizuka
também mora aqui?
Что? Так мама шефа Оридзуки тоже здесь?