Itou-san (KURAKA Sui)
I love this one. I need to write a full review for it, but it's great to find something dark without being completely heartbreaking. It's incredibly sad and depressing, but there's a satisfying nature to the conclusion.
Enka - Zetsurin Ou to Yokubou Ouji
A very strange, disturbing story, but I found the cold determination of the uke to be refreshing. So often atrocious acts are forgiven because the victim falls in love with the abuser, and it's rare to see that smashed to pieces.
Tabun Sore ga Love Nanjanakarou ka
I'm giving it four stars only because it says at the end that it's being continued, which I hope is the case. The sex in this didn't really do it for me, but I liked the foreshadowing that was hinted, the deeper drama, etc. The ending is sad only in the sense that the story isn't complete. It's a chapter ending, not the story itself, but I guess the tag could still apply.
Anxiety of Soul
Check Manhwa
Well... it doesn't look like this will be continued, since it was a 20-page chapter released five years ago. But I'm curious, since this little bit revealed... pretty much nothing. Poor translation, though, so I'm hoping someone new maybe picks it up someday.
Yuugure no Machi
I don't know if there's more to the main story or if the remaining chapters are going to be oneshots or something, but I really like this as is. I actually kind of wish there was more with the boyfriend and what not. I liked that surprise, and how he was tied to this dangerous man, but then it never went anywhere. At least it was sweet that it brought out the characters' feelings for one another even more.
Kishidou Club Bangaihen