Death's Daughter and the Ebony Blade: Volume 5 by Maito Ayamine

Olivia, Claudia, and Ashton set off on a journey, but this time it’s not a battlefield they're headed to. Fernest has forged an alliance with the Holy Land of Mekia to combat the Asvelt Empire, and Olivia is invited by the enigmatic Seraph Sofitia on an official visit. A magnificent welcome awaits them amongst the soaring spires of the seraph’s palace, but there’s more at play. Sofitia’s true aim is to make Olivia’s incredible power her own—and she has a killer offer with which to tempt the young commander. What will Olivia do when faced with the choice between her new friends and what she’s been seeking all this time? When offered hope of finding Z, will she be able to say no? Meanwhile, down in the darkness, Chancellor Darmés’ schemes are growing closer to fruition...