Karkat and Terezi were fighting Jack Noir, and were doing well, few cuts and bruises. The worst injury so far was a big cut on Karkat's forehead, that would most likely end up like as a scar. Karkat intended on taking Jack out while Jack was weak, after all that pain he had caused people.
Terezi came too, because Karkat didn't want anyone else to be brutally murdered. Sollux was with Kanaya, and Gamzee was actually alone, just in case he went on another psychotic, murderous, rampage. Jack was fast though. Karkat was starting to have problems hitting him.
Unfortunately though, Jack was fast enough to pierce Terezi's chest, before she could stop him. He pulled his sword out and let her fall back. Karkat couldn't believe it, he just lost another member, and to Jack too! Now he really had to die! To Jack, Karkat seemed to match his speed now.
They were going to end it, with one last blow. Jack sword was ready, along with Karkat's sickle. Karkat ran up to Jack, who remained motionless. He lifted his sickle, ready to end it, and he swung it, just as Jack swung his sword. Karkat had a huge gash right through his chest and stomach, but Jack, he was cut into two.
Karkat's torso felt a like a wreck, but he pushed on, and walked over to Terezi's lifeless body. A pain struck his heart, that he didn't think came from the gash. He took off her goggles, and closed her eyes. He noticed some of his blood from his forehead had dripped on her forehead, and formed a tiny red heart.
He lied down next to her and let the pain take over. His hand closed around her hand, and he left a message to Kanaya from Terezi's goggles. Then he closed his eyes, and never opened them again. Some of their blood started to merge together, as they lied there, in peace.
'GC: IT'S KARKAT JACK'S DEAD TEREZI'S DEAD AND I'M ALMOST DEAD'