Gimai Seikatsu義妹生活

Is there a manga of this novel?

I am not usually fond of Rom-com's mostly due to fact that most of the Romantics one's are written by females authors. Now, I DON'T have anything against the females authors but their work (especially Romance one's) are only consisting of drama, forced love triangle and unnecessary smut. (I usually prefer if they write fantasy one's, like Poppy war, Farseer, etc.)
Anyway, if I had to rate this book, it would definitely be 10/10.
Reason: a lot there are, so let me remark a few.
This is one of those fics where author really takes time and effort to first look into their circumstances, explore their background and develop their characters in a way that leads the Main cast to understand eachother which in turn lead to their relationship development.
I gotta give it to author but this is an absolute masterpiece. First two volumes will feel slow, and you won't notice any substantial development in their relationship not even as step siblings, but the third which I gotta mention is the best part of this book is where things start kicking.
I don't know your tastes but if you would like to give this a try, I wholeheartedly recommend it to you, you will not be disappointed.

I see.