Steam-Hearts PC98 Track 10 Battle Cry [Boss Theme A]
Steam-Heart's is a shoot 'em up and eroge developed by Giga and published by TGL. The story follows two siblings as they fight off a virus that is possessing the people in their world. The game features shooter gameplay paired with ample erotic cutscenes with scantily clad women! Good music too!
Read more at https://en.wikipedia.org/wiki/Steam-Heart's