The series remained unfinished after its author passed away, as only 20 of its planned 22 volumes have been finished.
Back in 2013, light novel author Noboru Yamaguchi, passed away because of cancer, leaving behind his signature series, The Familiar of Zero, unfinished.
The last volume, volume 20, was released in 2011.
They revealed that the final volume will be released on February 24th.