Blade of the Moon Princess Vol. 05 by Tatsuya Endo

Having learned the truth of the Matsu branch's banishment, Kaguya engages the Matsu emperor in a decisive battle. She then heads back to her home, the moon. There, Izumiya is plotting to commit an act of mass murder at a memorial concert. Can Kaguya stop her in time? Kaguya's odyssey reaches its gripping conclusion in this final volume!