Board Thread:FAQ Board/@comment-6697950-20150424092122/@comment-28251580-20170103185212

Volume 18, the end of the Alicization arc in the Web Novel, was released, yes. But Kawahara said he'd write Volume 19, an Alicization extra story? side story? No idea how to call it, and it strongly seems to be about the story of Cradle of the Moon (Alicization ending spoiler warning!), the volume will even be called Moon Cradle.