(c81) 彼岸花の咲く夜に 第二夜.ISO Higanbana no Saku Yoru ni 2nd Night (non-troll version)
This seems to be the normal version of Higanbana 2nd night, without some weird stuff about 2channel and homo jokes mixed in. I checked only the beginning of the 2nd chapter, so I can't be 100% sure, but it is most likely legit. DDL can be found here: http://www.viva-hentai.net/archives/2568.html