In the not-so-distant future, demons suddenly appear worldwide, leaving chaos and destruction in their wake. But amidst the despair, a group of ninja warriors emerges to defend humanity. With the power to boost their strength, they vow to eradicate the demons, quell the chaos, and bring peace back to the world again.

The game features an in-depth traditional turn-based combat system, but grinding can be avoided at the player's discretion! All grinding can be skipped by selecting Assassin Mode, which allows you to skip most battles (except for bosses) while still receiving all of the usual rewards!