[Light Novel] Even though it's a substitute political marriage, a hard husband who shouldn't love me is approaching with the bare monopoly (one book)

Publisher: Harper Collins Japan
Author: Miki Kono, Duck Morishita
Size: 105mm x 148mm
Number of books: 1
Language: Japanese
Category: Light novel, TL (teens love)
Latest release date: 2024-02-08

Synopsis:
"Be aware that you are my wife"
Give a baby with the sudden accelerating doting of the scion ...!?

Yuma became the wife of his older sister, the former fiancee, the wife of his sister, who was secretly longing.
However, at a distance that did not shrink, I realized that I was just a substitute for my sister, and I felt sad.
However, the monopoly desire, which was suppressed by a certain event, exploses!
―― "Would you like to be more like a couple?"
Yuma is being overwhelmed by the overflowing philosophy.
She has been discovered that she has been pregnant, and the doting of the priest is only increasing.