Altair is a story written by Yamanashi Moe and illustrated by carbonidiot. It ran in Issue 33 at http://s2b2.livejournal.com/191375.html, and is mirrored at http://www.shousetsubangbang.com/mirror/altair/.
From the author: "An incubus and a ghoul are roommates in Vancouver."
From eccentric-nucleus.tumblr.com: "sometimes it really sucks to be an incubus and have to constantly deal with having sex with people."
http://isis.dreamwidth.org/77353.html: "A sweet romance in which an ailing incubus is taken in and nursed back to health by a shy nonhuman man and his closest friend, a lesbian succubus. Apparently Vancouver has a thriving spirit world".
- pinboard.in: "omg. Altair. so sweet and cute and lovely."