Akai Ito No Shikkou Yuuyo
One of the sweetest, cutest stories I've read in awhile - I'm such a sucker for sweet semes and grumpy ukes and falling in love over the course of time, and these two did that to an absolute T.
Silver Diamond
Sugiura Shiho's art has only gotten more and more beautiful with time. I picked this up because I loved Koori so much!
Kanawanu Koi no Musubikata
Sequel to Akai Ito, which was probably my favorite manga I've read this year... I'm so happy there's a sequel involving Kamisawa!
Oku made Furetemo Ii desu ka
Quality of translation was questionable even for a fansub but production value for the actual text, fonts, and onomatopoeia was very good; the story was cute and the characters were pretty lovable. The art is also gorgeous!
Heterogeneous Linguistics
Absolutely adorable researcher-going-native story in a monster world, with great linguistics and anthropology (the slimes!)
Taiyou No Kikoushi