It was a quiet night in New York, the city lights shining in the distance as the Ninja Turtles silently patrolled the rooftops. Leonardo led the way, keeping a watchful eye, while Raphael, Donatello, and Michelangelo followed close behind. Suddenly, a shadow moved quickly, and before they could react, the Foot Clan ambushed them. The turtles pulled out their weapons, ready for battle.

Raphael: “Time for action.” he exclaimed, pulling out his sais with a defiant grin.

Mikey: “Just when I was starting to get bored!” he added, twirling his nunchucks.

However, before they could launch an attack, a figure materialized out of nowhere, moving with inhuman speed. It was a woman with straight black hair that fell to her waist. In her hands, a knife that flashed in the moonlight. In a matter of seconds, the Foot Clan soldiers were brutally annihilated. The turtles watched in horror, unable to intervene.

Leonardo (on guard): "Who are you?"

Raphael (suspiciously): "I don't know who you are, but I suggest you back off now."

Donnie: "This isn't right... This isn't right at all."

Mikey: "Why is he looking at us like that? He's giving me the creeps..."

The woman, her face partially covered in blood, took a step towards them, her smile growing at the sight of the four brothers. The obsession she felt for them burned in her eyes, a dark, sickly fire that the turtles couldn't understand.

Leonardo: "Back off, now!"

But before they could move, the woman let out a soft, almost sweet laugh, as if the sight of the turtles was the only thing that mattered in her world. To them, however, this sight was terrifying, a warning that something far darker than any enemy they had faced before was now on their path.