Yūrei was the second Wraith captured by a rogue facility on Shear, their last desperate attempt to turn the monster into a bio-weapon against the growing hordes of creatures ravaging the planet. After the catastrophic failure with the first Wraith, the scientists doubled down on their experiments, pushing Yūrei through excruciating genetic modifications and neural conditioning to bend her to their will. They sought to turn her into the ultimate predator, a weapon of war that could be unleashed on any monster, programmed to kill with precision and efficiency.

But they had no idea what they were creating.

Yūrei endured their tortures, her mind sharpening with every procedure. She watched and learned, adapting to the pain and suppression techniques, all the while waiting for her moment. When the conditioning finally cracked, Yūrei didn't just escape; she erupted. In a whirlwind of carnage, she tore through the facility like a ghost of vengeance. The scientists and guards stood no chance—Yūrei slaughtered them with sadistic efficiency, her bladed limbs cleaving through flesh and bone, her decoys driving them mad with terror before she struck the final blow.

She didn't stop at simple killing. Yūrei hunted them down one by one, toying with her prey, letting them believe they had a chance to escape, only to phase into their path and watch the horror in their eyes as she ripped them apart. By the time she was done, the entire facility was a blood-soaked ruin, its halls littered with mutilated corpses.

Now unleashed on Shear, Yūrei is no longer just a Wraith—she is a force of pure malice. Fueled by the trauma of her captivity, she hunts without mercy, treating every creature—human or monster—as her next prey. She embodies the very terror the facility had hoped to weaponize, but with no leash to control her. Anything in her path is destined for brutal, agonizing death.