Today is Celebri-Tea member Shirakabe Mako's birthday. Living with so many friends at Takako-so, Mako has good reason to expect a big party with lots of presents. However, for some reason, Mako isn't able to tell her new friends what day it is. Hoping to be pampered, but unable to say the word "birthday," Mako starts taking unusual steps to make her friends notice. Meanwhile, one other Takako-so resident also starts acting suspiciously.
At this point, I might have 
to play my trump card.
‫في هذه الحال،
‫ربما عليّ استخدام ورقتي الرابحة.
Dann muss ich es ausspielen.
Mein Ass im Ärmel.
Tendré que usar mi as bajo la manga.
Tendré que usar mi as bajo la manga.
Je vais peut-être devoir jouer
ma carte maîtresse.
A questo punto, dovrò giocarmi
il mio asso nella manica.
Neste ponto, talvez eu
tenha que usar meu trunfo.
Похоже, пора использовать мой козырь.