I Contracted with Mosquito at the Beginning, and I Became the Blood Curse Demon King.

During the contract ceremony, others summoned the violent bear nightmare, but Ling Ye only contracted a mosquito! He became the laughing stock of the whole school. He was supposed to be a terrible person at the bottom, but he unexpectedly awakened the "Blood Curse Demon Lord" system—— This mosquito can actually suck the energy of all things and feed it back to itself. It can also unlock the [blood-sucking mark], kill people from a distance, spy on memories, and control destiny! From the inexplicable sudden death of a school bully to the quiet rise of a black market spell master; From the serial pursuit of the Abyss Cult to the bloody road of killing gods and demons! Ling Ye takes charge of the mosquito swarm, refines thousands of blood, casts curse bodies, and shakes the world with curses! When the sleeping bloodline is completely awakened, he will finally uncover the mystery of his parents' disappearance, crush the throne, and become the blood-cursed demon that makes all living beings tremble! "The one I contracted is not a mosquito, it's the beginning of killing gods!"