Now with chapter 15, in which no other major characters show up

Wow. It's EXACTLY as it says right on the label.
Ya know what, 10/10. I wasn't lied to, I like that.

Base +6, seenthat +8, Jasthecut1e +5

finally another all together gallery, thanks, keep up the good work

Base +6, seenthat +8, Sohhhh +6, Kuruh +6, Jasthecut1e +5

Thank you for posting this one, this story is great and i hope there are way more chapters as well.
As for the most recent chapters, so the other girl also had a relation with her brother? well, i feel like this is a set up for her to accept the MC and his sister, and hey, i'm not complaining, now that the MC and his sister are alone for some time i really hope next chapter is only about them having sex, different costumes, different places, etc, i hope they don't just skip those alone days not that someone else appears...

Base +9, KlienMacleod -6

yep threesome incoming

Base +6

The question is: will he survive to this day??? Her sex drive is unstoppable, at this point! /o

Base +6