Everything is UnTL'd.
Sayonara wo Oshiete ~Comment te Dire Adieu~ has an ongoing translation, but it hasn't seen any recent progress.
Kusarihime ~Euthanasia~ seems cool and Higurashi-esque. Or the other way around, as Kusarihime came first.
Shizuku popularised the genre, apparently.
Jisatsu no Tame no 101 no Houhou is considered one of the big three denpa names, if I have my info correct.
Then there's Tsui no Sora, how SubaHibi started out. I heard SCA-JI doesn't want people to read it though.
Oh, and the unreleased Makki, Shoujobyou -Lyrical pop world's end. It will probably stay unreleased too. ;0;