The Watch Dog

Prologue: The One Who Looked Into the Abyss

The Sun shined and the gentle breeze blew – it indicates that today has a good weather for first day of school. But Tsukune didn't care; he has a "job" to do in a school— and this "Job" is too important that he cannot decline it. He stood still on the sidewalk waiting for the bus to arrive. He then looked up in the sky; he wondered what would be his rules of engagement after arriving there because the student that he will be encountering would be "Different". After he considers it, he then checked his wrist watch—3 minutes has passed since he arrives at the bus stop. Getting impatient He looked at his left side and saw the Bus already approaching.

The Bus stopped in front of him and opened its door—Tsukune stepped inside the odd vehicle. He scanned the surroundings but no one was there except the driver. The Bus itself seems pretty normal but looks can be deceiving considering no one is inside the bus except the Driver himself.

"Nice day isn't?" The Odd Driver spoke while holding his cigarette

"The Hooded Man said that." Tsukune replied while taking his sit

"So kid, you're the "Guy"?"

"Yeah"

The Phrase he just said was to confirm that he was the one that the Chairman "Hired".

The Bus Driver inhaled the smoke in his cigarette and started to drive. He took a glance at the rear-view mirror—he saw Tsukune sitting peacefully

"Nice to meet you Tsukune Aono or Should I call you "Blood Reaper"?" the Bus Driver Greeted Tsukune with a grin "Anyway, the Old man told me that I should re-brief you on your "Task"."

"Fine"

"Okay, first of all you should protect this girl." The Driver tosses the picture to Tsukune while driving "Her name is Moka Akashiya, The Daughter of the Great Dark Lord—Akasha, You know one of the 3 Great Dark Lords?"

Tsukune knew who those 3 are—His Mentor taught him about what they did. His Mentor was also a Vampire. Even though he is still a pure human, she was the one who took care of him and trained him when he was abandoned. When his Mentor died he ended up in an orphanage, then he was adopted by Kasumi Aono and His Husband at the Age of 11.

"Anything else"

"Of course, you need to keep an eye of the Public Safety Committee."

"Got it"

He also heard about them, they are the Infamous "Academy Cops" a group of corrupted and sadistic enforcers. Rumor has it that their Leader is the strongest monster in the academy. Just thinking about it can make Him laugh. Setting it aside, Tsukune observed the picture of Moka Akashiya—she has pink hair, creamy white skin, and emerald eyes. "She is cute" Tsukune thought about it but he doesn't have time in having that kind of relationship. He then tries to deduce what kind of personality Moka has as he analyzes her picture.

Moka Akashiya It seems she is also a vampire and as the Daughter of Akasha, she might be quite famous. And Tsukune really wish that she will be not stupid, arrogant and prideful; it will be troublesome for him to protect her. But he reconsiders that she might not be stupid as she is the daughter of The Great Dark Lord. But being arrogant and prideful might be a problem— but he can handle it.

After analyzing Moka's Picture, Tsukune calmly looked back at the window until the bus entered a tunnel— His view of the window was blocked by the darkness. After passing by the tunnel his view of the window gave him a look of the blood red sea and the lifeless grey sky. It did surprise him though; a new environment—it means he needs to quickly adapt into it.

The Bus stopped at its tracks and opened its door. As Tsukune stood out with his bag, the Bus driver exhaled his smoke

"Good luck, kid."

"You too"

Tsukune stepped out of the Bus. As he set foot on the ground, he immediately observed his odd surroundings— there is a scarecrow with a jack o lantern as its head on the cliff, a dead tree, and a bunch of crows flying through the dead sky. The Bus already left, leaving him alone.

A/N: Hello guys I'm back. What do you guys think about the concept? Is it good? Oh and by the way this fanfic will be similar in Darker than Black: Kuro no Keiyakusha, As Tsukune's assassin/hit man Outfit will have a white mask, a trench coat with a hood, and his nickname "Blood Reaper".

Those who are asking about the Halo + Rosario Vampire Crossover, I apologies for not able to update because I've run out of ideas. . . If you have ideas, you can message me and I'll look into it.

Disclamer: I Do not Own Rosario + Vampire