Queen Zahr's Revenge
Queen Zahr's Revenge is a story written by Matsu Kasumi and illustrated by beili. It ran in Issue 56 at http://s2b2.livejournal.com/316797.html, and is mirrored at http://www.shousetsubangbang.com/mirror/queen-zahrs-revenge/.
From http://fairyninjas.wordpress.com/2015/08/27/ssbb-56-out-of-this-world/: "Tentacle porn. In a good way. No, no, in the best way."
From http://harmless-one.livejournal.com/39472.html: "about space pirates who end up helping out a prince with his political aspirations. The prince happens to be a
tentacle monster squid-like alien creature and one of our space pirates happens to like that sort of thing. This is a follow-up story to Subarashii that ran in issue 51. A fun, kinky story."
It is a follow up to Subarashii, but can be read as a standalone story.