Thank you for the chapter and I hope your surgery goes well. Why is it I have a feeling Charlotte and Ristia will get into an oneechan off before to long... Somehow I find it difficult picturing Ristia going after any of her imouto candidates even though she is a woman of culture.
Sadly, the author stopped writing the novel after just 1 volume. It was originally supposed to be 2 volumes, so it never really reached the proper conclusion. Hopefully this manga will continue beyond the original story to the true end.
Thanks fo th chapter!! Btw it also have a web novel but the otherworlder is not mentioned there. Here's the link https://ncode.syosetu.com/n9188eg/
It only have 75 chapters though..
Imagine having a story where a character who didn't exist in the LN is actually a solid contribution to the cast.
Now stop imagining, Yuuko's already here.