It started with a kiss. A secret kiss. A kiss that no one would have known about. A kiss that would have soon been forgotten. A kiss between two trolls, who had kissed before, and had kissed every night since. At first the kiss was romantic, and passionate. Until she bit him.
"Ow, what the fuck, Terezi?" He screeched.
"Shhh," she ordered. Then she chuckled. "Just this once? Please?"
"No means no! That shit hurts," he grumbled.
"Please," she pleaded. "I won't ask ever again, so please?" She kissed him once again.
He only grunted in response, which meant yes.
She bit him once more, a wince escaping his bleeding lips. She licked the wound, letting the candy red seep into her taste buds. Everything was red, all around her. It was as if the world wasn't there anymore. She was trapped in a case of red bliss, and she never wanted to escape. Her nails dug into his skin, clawing at his arms. He tensed up, but did not resist.
The couple toppled over, onto the cool floor, but she did not stop. She was on top of him now, arms tightly around his neck. Tongue licking the blood that trickled down his neck. She sat up for a moment, studying his terrified features. She only smiled once again, and began tearing at his blood-stained shirt. Once it was off, and the grey skin exposed, she kissed his lips once more, running a nail down his chest. He winced again from the pain. She kissed down his neck until she reached the start of the cut. She started at the top, licking the wound down to the hem of his pants. She hummed in pleasure for a moment, before taking a knife from the desk beside them.
"Terezi, no, I-" he screamed in agony.
She only cut deeper, and deeper, the blood running down his sides and onto the floor. She let out a dark laugh as the life trained from his eyes. Blood was everywhere. Red was the only thing she tasted. Red was the only thing she smelled. Red, was the only thing she wanted. It was her favorite color, after all.