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.
As per its name, the Horngry Donut monster
 is a horned, hangry, donut-like monster.
‫من اسمه،
‫إنه وحش يشبه الدونات ذو قرون يتضور جوعًا.
Der Hörner-Donut ist, wie der Name
schon verrät, ein gehörnter Donut.
Come suggerisce il nome,
Como o nome sugere, o monstro Donut Chifrudo
é um monstro parecido com um donut com chifres.
Как ясно из названия, это чудовище,
которое выглядит как пончик.