Imouto Sae Ireba Ii returns with another great volume.

Don't actually read this thread if you want to eventually read the official English releases, but at the rate Yen Press is going, it's going to be at least 2-3 more years before you get to material not covered in the anime.

Past Threads:
https://desuarchive.org/a/thread/182954189/#182954189
https://desuarchive.org/a/thread/182478607/#182478607
https://desuarchive.org/a/thread/180052753/#180052753
https://desuarchive.org/a/thread/177408136/#177408136
https://desuarchive.org/a/thread/175667996/#175667996
https://desuarchive.org/a/thread/175038726/#175038726
https://desuarchive.org/a/thread/174846330/#174846330

I recommend you actually read the last thread to know who's who and what's going on, as the huge ensemble cast is one of the series' strongest points.

Last time on Imouto Sae Ireba Ii: Itsuki and Nayu break up over Itsuki's writing becoming soulless.

And now for volume 12.