Demonic Blood Control

Fang stared in horror as his friend fell lifelessly to the ground, blood spilling from his wounds. Fang rushed towards him, screaming his name, but he knew it was too late to save him. He looked into his friend’s eyes and saw no life left in them, he had died perhaps before he even knew what had hit him.
The friend killer smirked. “Heheh, I told you not to get in my way, annoying pest.” He raised his sword, which was glowing a faint white light and gleamed with the blood on the blade. “You are next, fox. Let’s get this over with quickly.”
Fang did not move, only trembled with fury as he stood over his dead companion. Suddenly dark blue colored wings shot out of his back as he transformed into his demon form. He screamed in anger and his wings changed to a dark red color. A blood red color began to spread over his light blue and white fur like a disease, as his anger overtook him. He flew straight up into the air, and suddenly it was nighttime, when it had been day only seconds ago. Dark storm clouds, summoned by Fang’s very energy, swirled overhead and unleashed huge bolts of lightning. The lightning hit the ground around Fang’s enemy. Fang’s eyes shot open and they changed color to a bright red. He glared down at his enemy, all signs of good gone from his eyes.
The friend murderer stood unmoving, frozen with fear. “Y...! You shouldn’t be this strong... how can you have so much power?!” He shouted.
Fang glared evilly down at his opponent, tears streaming down his face. “Disgusting vermin. I won’t even need my sword to eliminate you. I can kill you with my bare hands.” The dark red colored fur created designs all over Fang's body now, as he was consumed by his evil and hatred. Suddenly the air was filled with a great pressure, created from Fang's dark and incredible aura. The murderer gasped, as the pressure increased so much he could not breathe. He tried to run but he could not move, held in place by an invisible barrier that shrank more and more. The pressure became so great that it crushed the bones in his arms to dust. He opened his mouth to scream in pain, but he could not make a sound. Blood trickled from his mouth.
Fang rocketed towards the enemy, the thing in the world he hated the absolute most and slashed him across the chest.
He collapsed to the ground, appearing to be dead but Fang could still hear the beating of his wicked heart. He lay motionless, too wounded to move. Fang stared at him, his face devoid of sympathy. “Suffer.” Fang commanded. Suddenly, the friend killer writhed on the ground, mouth opened wide as if to scream, but he was unable to make a sound. If he had not been so consumed by hate Fang may have enjoyed watching the pain of this most hated person.
“Now die.” He said, and raised his arm straight out towards him, fingers outstretched. He clenched his fist and the enemy immediately stopped moving, for his heart had burst inside his chest. His blank eyes stared into space.
Fang scowled hatefully at him. A flash of white light and lightning struck down on the corpse, incinerating it into dust. Fang looked back at his fallen friend, and squeezed his eyes shut. The thunder and lightning stopped and a gentle but cold rain began to fall as Fang’s anger turned to sadness, he had his revenge but it did no good, his friend was already lost forever