Our Last Crusade or the Rise of a New World, Vol. 2 (light novel‪)‬

May luck shine in your favor
The stars once aligned to grant a series of meetings between two fighters from enemy nations, but those ephemeral days have come to a close. Iska and Aliceliese must now take it into their own hands to scour the land in hopes of a rematch. Call it coincidence or predestination, but the pair manage to slip past each other at every turn, unaware they've been dispatched to the same battlefield. In their fight over a vortex of astral energy, they might just find that what brews and burbles in its abyss is more than magic...