In the city of Grimrouge, crime doesn’t hide in the shadows—it runs through every alley, every deal, every heartbeat. This metropolis of anthropomorphic beings thrives under the rule of gangs and hidden empires, where beasts wear suits and monsters smile behind masks. The Grayhusk family, once the most feared among them, controlled nearly half the city through a powerful mafia organization. But everything changed when the eldest son vanished under mysterious circumstances. Ten years later, the empire has fallen, and Victor Grayhusk, the father and former mafia boss, has surrendered to despair—dissolving everything he once built with blood and loyalty. Now, Piku Grayhusk, the youngest son, lives a quiet life as a pharmacy student, far from the chaos his family once ruled. But peace is fragile. When his parents are found brutally murdered, Piku is pulled back into the underworld he tried to escape. Shattered by grief and burning for revenge, he vows to uncover the truth and make Grimrouge tremble once again. The hunt begins. And in this city of beasts… blood will always find its way home.