Shounen No Kyoukai
The story was quite rushed and overwhelming at times but it eventually balanced itself out. When Rin came into the picture, mangaka didn't hesitate to smack you in the feels over and over again. Thankfully things ended well. Good read.
Rakka
First story is a bit twisted. Second is massive age gap.
Knife (CHIBA Ryouko)
The story was great save for a few minor things. Some things didn't quite connect for me when it came to the development of their relationship, but aside from that, the story was very interesting. It's the first time I've read something yaoi/BL related that had a serious police plot. Good read!
Hitsuji no Kawa wo Kita Kemono
SO GOOD. Wish there was more but it is what it is. Great writing. Some things go unresolved but hopefully, MAYBE, another volume will be added.
Red Beryl ni Sayonara