I'm not married to my sister (1-3 volumes)

Publisher: Nippon Bungeisha
Author: Rena Ayano
Size: 128mm x 182mm
Number of books: 3
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2015-12-09

Synopsis:
Recommended by sister marriage (syscon) for older brothers nationwide!
The high school student, Kei Kazuru, became a couple with the old family's daughter, Chiho, for unavoidable reasons, and started a newlywed life.
I long for my brother, Chiho who is too vulnerable!
In addition, the mysterious Lori girl, Orochi -chan, and the tsundere cousin, Haruka, will start living together!
Harem☆Sister marriage love comedy, birth!