Ectoplasmic Manifestation is a story written by Aosora Hikaru. It ran in Issue 57 at http://s2b2.livejournal.com/322339.html, and is mirrored at http://www.shousetsubangbang.com/mirror/ectoplasmic-manifestation/.
From fairyninjas.wordpress.com: "A young man, who is a horribly easy mark is invited to a haunted house by his boyfriend. The trip to the house itself is sadly brushed over, but otherwise this is a hilarious and fun little high-schooler romp."
- http://harmless-one.livejournal.com/41201.html: "about a jock who is afraid of haunted houses and his band nerd boyfriend who drags him to one such haunted house. The descriptions of what it is like to be afraid of a place like that really worked for me. I liked that the story was on-theme, but also kind of the perfect S2B2 story by being short, porny, and cute. The title is from the surprise at the end. Ahem."