The Eleusinian Mysteries
The Eleusinian Mysteries is a story written by Takiguchi Aiko. It ran in Issue 43 at http://s2b2.livejournal.com/251636.html, and is mirrored at http://www.shousetsubangbang.com/mirror/the-eleusinian-mysteries/.
From fail-fandomanon.dreamwidth.org: "Steampunk retelling of Persephones and Hades myth."
From pinboard.in: "Michel is kidnapped by the Duke of Underneath, who wants Parliament to recognize the people of Underneath as citizens of England. A reworking of the Hades-and-Persephone story."
- pinboard.in: "I really liked the worldbuilding and the translation of the myth to this setting. Also, robots!"