If it is her Seii (1-4 volume is the latest issue)

Publisher: KADOKAWA/Kadokawa Bookstore
Author: Suzu Masada
Size: 128mm x 182mm
Number of books: 4
Language: Japanese
Category: Other manga
Latest publication date: 2013-02-27

Synopsis:
Yuki Fujimoto, the protagonist who decided to live in an acquaintance's house due to his sudden transfer of his father.
However, the Kiryu family, who lives, is the mother, silk of a "sensual novelist", and the mother's help to make a novel ??・ It was a strange family called Sarasa ...!? A boy whose fate was a fateful girl who was destined to see a “sensual” love comedy!