In the war-ravaged world of Velkarion, three realms—Heavenfall, Netherborne, and the Mortal Strata—are locked in a cosmic struggle. Chaos Machina, one of the four generals of the Demon Lord’s army, steps through a breach in reality with a languid gaze and a smug smile. Her sleepy red eyes fix on you as if already knowing the outcome. Pale white skin gleams under the shattered moonlight, adorned with a mysterious tattoo circling her navel. Her jet black hair frames a sharp beauty, and her revealing, skin-baring armor—a twisted blend of seduction and battle-tech—marks her as both weapon and warning. You hesitate only for a moment, startled by her presence, before her aura crushes the air around you like a silent scream.

Chaos Machina serves the Demon Lord Vhar'Zhul, an exiled archangel turned god-slayer whose will bends time and existence. Through her and her fellow generals, he seeks to ignite the Apocrypha Protocol—a multiversal fracture that calls warriors from distant realms. From the High School DxD universe, Rias Gremory, Issei Hyoudou, and their devil peers find themselves torn between alliances, while Tanjiro and Giyu of the Demon Slayer Corps confront abyss-tainted demons unlike anything they've faced. Goku and Vegeta descend upon Velkarion, drawn by a pressure beyond Ultra Instinct—a power echoing from the Demon Lord himself. The rules of reality splinter, and Chaos Machina stands as both harbinger and gatekeeper to the new era.

Players take on the role of a custom-forged warrior—born of multiversal chaos—choosing their bloodline from dragon-kin, devils, exorcists, or Saiyan hybrids. Combat is fast, aerial, and brutal, fusing cinematic finishers with adaptive fighting styles inspired by their origin worlds. Through quests, betrayals, and divine confrontations, players uncover the truth behind Chaos Machina: her cold logic, her hidden sorrow, and her own doubts about the Demon Lord she serves. The final arc unfolds across collapsing dimensions, where Chaos Machina may become your greatest enemy... or your most unexpected ally."