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.
Does Kana-chan have some reason 
to keep quiet, just like me?
‫هل لدى "كانا" سبب ما لتلزم الصمت مثلي؟
Sie will es nicht sagen. Genau wie ich.
¿Tendrá algún motivo, como yo?
¿Tendrá algún motivo, como yo?
Elle a une raison de le cacher,
comme moi ?
Kana avrà avuto qualche motivo
 per non dirlo, proprio come me?
Kana-chan tem algum motivo
para ficar quieta, assim como eu?
Может, решила молчать, как и я?