Synopsis taken at Raw : In 1470 AD, the destiny of expansionary forces launched a massive expedition. Despite doubts about the purpose of this war, Kallen Kaslana, the top tier female valkyrie, obeyed the orders of the scikshall organization. But on the battlefield, her consciousness was questioned...(Timeline : Direct Prequel of #Book 1005)Main Story :# Book 1001 = Escape From The Sky# Book 1002 = Cherry Blossom Recall# Book 1003 = Mystery of Stigmata# Book 1006 = Anti-Enthrophy Invasion# Book 1007 = Gratitude Arc# Book 1008 = Moon ShadowSide Story :# Book 1004 = Violet Sea Tales# Book 1005 = Dark Sakura Tales | Guns Girl SchoolDayZ EX - Sakura Arc# Book 1009 = Purple Kite's Tales# Book 1010 = Secret of the God's Key# Book 1012 = 2nd Herrscher/LawmanSpin-off :# Book 1011 = When Kiana Play Honkai Impact# Book 1013 = Valkyries' Dining Escapades# Book 1014 = Summer Memories (NEW)