There are twenty independent stories written by twenty different authors, sharing the common theme of "April". An anthology that is considered a rare item as it has never hit the shelves as a standalone book. There is no ISBN and it is an unbuyable except in online auctions. The anthology was published as a bonus gift to Dengeki Magazine readers in 2009.

I thought that the book was far out of reach. That the book was a bond between mother and daughter. The book was a fear of the grandfather, and the memory which was not able to be forgotten. And, because it is too strong, one book cannot be parted. All the books there were countless "thoughts", and all the readers gathered there had only a few "stories." Saezri Library in the Twitter town. It is a beautiful and mysterious library with the "Future" of the book. Kougyoku is TACA, and the Future (Love song) to all the books. The important book for you is surely handier here.