This is the PS2 version of the popular Japanese arcade shooter. You can play as either Nuteha or her friend Ageha. Ageha uses a straight-line standard and Rapier shot, while Nuteha's standard fire is spread like a fan. Both can use a guard barrier that protects them from projectiles, or use the energy built up in the barrier gauge to deliver powerful guard barrier attacks of different strength levels. It's a top-down, vertically scrolling 2D shooter.