In ancient times, there were four great demonic beasts that caused chaos in the world. The demonic beasts emerged and caused chaos in the world. The four great sages born out of the chaos killed the four monsters respectively and sealed their corpses with their own blood. Nowadays, monster beasts reappear, winds and thunders are raging... You can't do nothing, you will also have your own passionate companions, you will have people you have a crush on, and the blood of the sages flows in your body. And you are destined to be different. Hunting monsters is your mission. Kill!