There are as many as five masterpieces - Kieta Sekai to Tsuki to Shoujo -The World was Prayed by The Girl Living A Thousand Years- , Unjou no Fairy Tale , Karigurashi Ren'ai , AI Love: Koisuru Otome wa Kikaijikake and Butterfly Seeker. But the last one is chosen by Clephas and deserves the upper hand.
Micchi adds RIDDLE JOKER and Natsuiro Ramune to the list.
Year 2017 is probably the last great year with respectable number of releases each month and almost 20 masterpieces.
Can't see anything decent enough except for
Year 2016 is a comeback with some very strong titles and months after somewhat weaker 2015. It even broke out of the 20 masterpiece curse.