Unknown Letters
1-en no Otoko
Well done. The first one was about a detective and the customer who asked to find his sex friend who supposedly ran off with 15 mil (though, not really). Second story was about uni friends who start going out after they start working. It was adorable. Third one was about the boyfriend who didn't really steal the money at all and his one true love. Loved them all.
Koi To Wana
1 (ch1-3): jaded and disillusioned high schooler seeks protection from bullying in the arms of a pretentious rich kid, until he falls in love with his unsociable and scary classmate (who's the son of an ex yakuza family) and finds out what love really is 2 (ch 4): run-away high schooler meets cool dude in the country side and romance develops (he returns home but the relationship is set to continue) 3 (ch 5): prequel to Mankai Darling.
Sugar Code
not a very fulfilling ending, because it was not enough but great story
Kobi No Kyoujin
Silence (AKIYAMA Koito)
The first and last ukes look painfully young (especially the first). I would really not recommend re-reading.
Seishun no Yamai wa