In The House Of The Demon Prince
From Shousetsu Bang*Bang Wiki
In The House Of The Demon Prince is a story written by Yamanashi Moe. It ran in Issue 12 at http://s2b2.livejournal.com/59800.html, and is mirrored at http://www.shousetsubangbang.com/mirror/in-the-house-of-the-demon-prince/.
Summary
From the author: "The only one of these that is kind of scary. Warning for body horror and um dubcon sex with a giant spider."
From eccentric-nucleus.tumblr.com: "it’s about the last demon prince of a dying dynasty, and his three courtiers: Blue Snake Woman, Bad Luck, and Paul Wackowski. m/m but the contractual sex scene involves a giant spider"
