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.
A horse-shaped monster battles 
the giant life form known
‫وحش على شكل حصان يقاتل كائنًا ضخمًا
Ein Monster, das wie ein Pferd aussieht,
und ein riesiger Weltraum-Geist.
Un monstruo en forma de caballo
y el espíritu de las estrellas
Un monstruo en forma de caballo
y el espíritu de las estrellas
Un monstre en forme de cheval affronte
une créature appelée la fée des étoiles
Un mostro a forma di cavallo affronta 
una forma di vita gigante nota come la Fata delle Stelle
Um monstro em forma de cavalo luta contra
a forma de vida gigante que é conhecida
Чудовище-конь сражается
с неизвестной формой жизни.