The two are the beef head! (Volume 1-2 new book)

Publisher: KADOKAWA/Kadokawa Bookstore
Author: Antijin Seno
Size: 128mm x 182mm
Number of books: 2
Language: Japanese
Category: Manga
Latest release date: 2013-10-26

Synopsis:
One day, Sachi Hinayama, who has a weak presence, follows the Sister from a heart. A cow head dressed as a glasses beautiful girl in the class that appeared there was threatened to say, "Your previous life is a sinner, you should work as a prison in this world!"