According to a website I found, this has 7 chapters. Not 6. So this isn't complete.
https://www.mangaupdates.com/series/nx3isrh/7-kakan-nonke-wa-gei-ni-mezameru-ka
I also think I read it on futekiya? But there is definitely an extra.
I could have sworn I had read this already, and that there was a 2nd volume...but now I can't find it. Or am I thinking of another manga with a very similar premise?