Söldnerschild’s Ayami Kojima cover art gives strong Symphony of the Night vibes, but this SEGA and Koei collaboration is nothing the like. A strategy game set in medieval Europe that has shades of Dragon Force, it was released in the last quarter of 1997 exclusively in Japan.
After some overworld scenes and extensive administrative menus, the player deploys battalions against those of the enemy on a grid pattern. Get close to an enemy battalion and battle ensues!
A behind-the-player overhead view shows the clash, with generals able to change strategy on the fly, cast spells, and so on. In Koei tradition, campaigns can be very long, though individual battles can be simulated. The language barrier is strong, but the presentation here is slick.
From what I remember, this game was to be a Saturn exclusive until Koei broke the deal and released an updated version on the PS1 a year later.