[Light Novel] My sister can't be a girlfriend (5 books in total)

the publisher:
Author: Kagami, Mikuro
Size: 105mm x 148mm
Number of books: 5
Language: Japanese
Category: Light novel
Latest release date: 2023-11-10

Synopsis:
No matter what, at the end, a love comedy that is "absolutely" with the most cute sister in the world!

Sakuraha is the cuteest sister in the world. Although she is a junior high school student, she is a beautiful girl who is a model -like appearance, and she has a perfect growth of her chest, and she has a good personality.

"Let's play the game! Today I'm going to bump your brother!"
"How about Fufufu? I chose my brother's favorite clothes."
"Your brother, let's take a bath together?♪」

But I'm still a child at home.
I'm always a cute sister for me, and I'm just enjoying my brother and sister's skinship.
I thought so…….

But one day, the fact of the shock is clear that we are not real brothers and sisters!
My sister shouldn't be able to be Kanojo ... but this is a different story!?

No matter what, at the end, "absolutely" a romantic comedy!