This is the beginning of a story I thought of. Please tell me what you think of it so far. I don't want to continue something that people think of as idiotic and pointless. I know, many people write Mary-Sue stories, but I'd like to add my own strange twist on it. I don't know the pairing for the future, I'll actually writing this as I go along. Also, don't expect me to update quickly. I just enjoy being a bitch like that.

Darkness fell quietly over the horizon, and the lights of the city began to take on their neon glow. Up above the bustling night life, a lone figure stood stoically on a ledge of one of the many skyscrapers. It watched as the last beams from the sun died out and the stars took their place on their navy stage.
It grinned and slowly fell forward, the sudden pull of gravity taking it down from it's perch and strategically landing on a fire escape below it. From there it scanned the streets, it's prey in it's sights.
The lone man walking down the sidewalk didn't notice that he was being watched and continued his trek to his home. It had been a long day, the damn printer had died and his boss had been unfairly cross with him. Now he was going to deal with his wife, no doubt she was going to be angry about his lateness. Damn paperwork.
The figure moved quickly, taking it's time amongst the shadows, weaving in and out of alleys until it was in one that cleverly intersected the man's path. The alley it had chosen was fairly clean, however it still had a lingering smell of trash and city air. Oh well, it had no ways of changing that. It had no vendetta against the man, in fact it sympathized with him. However, life is hard, and those who are stronger sometimes had no other alternative than to exploit the weak and unsuspecting.
The train of thought was cut off at the realization that it's prey had come closer. It had little more than a minute to prepare itself. Muscles tensed and it could feel adrenaline begin it's course through it's veins. Just a little closer. Hands clenched in anticipation. Now.
Arm reached out from the darkness at the man, wrapping themselves around his torso and dragging him into the dirty alleyway. Papers fluttered in the breeze and fell to the ground. A hand was placed over his mouth as he opened it to scream. Now muted and helpless, the man began to panic, his eyes looking wildly around at his attacker.
Yes, this was what it was like to feel powerful. A shiver ran down the figure's spine at the warmth and life flowing off of the man in it's clutches. He started struggling and tossing his head, but it was no use. The thing that held him was far stronger than a regular human. If it was human at all.
He felt was a pair of lips on the top of his shoulders where his spine connected to the bones of his neck. And then he felt it. A draining sensation, like the energy of his body was being sucked out by this person. This made him further his attempts at freedom until the fatigue became too much and he gave up. Not long after, he went unconscious.
The figure slowly set the man down on the gum spattered ground, reassuring itself that he would be found before another criminal of the city had it's turn with him. The man wasn't dead of course, just unconscious, his body would soon recuperate the missing energy. The figure prided itself on being a criminal, not a murderer. Now that it's meal was over, it had to be going.
At least one single passerby should have noticed the girl walking out of the mysterious alley. That is if anyone had been paying attention to that certain alley, which none were. Humans are quite ignorant of their surroundings of course.
Not long after a kind, homeless woman digging through the trash found the man and noticed his clean clothing. Such clean clothing didn't belong on a tramp of the streets. The man was rushed to the hospital and found to be completely healthy. Just drained of energy and with an odd circular burn mark on his neck.
Strangely enough, more cases of unconscious people with these circular burns began pouring in. No one understood what was happening. Was it an illness? Did Gotham City have a new villain? If so, then why didn't he or she take anything from it's victims? Indeed, all the wallets and jewelry found on the unconscious people were accounted for and none were missing. Such odd occurrences were bound to attract the attention of a certain Justice League.
And that is where our story begins.

There it is, the prologue. Please tell me whether or not you think this beginning deserves to have an ending.