A Vow of Revenge
Disclaimer: Buffy doesn't belong to me. Don't sue. I'm broke.
Spike walked into the hospital room where Xander lied. He sat in a chair next to the bed and looked at Xander's sleeping form. He couldn't believe what had happened. The events of the fight flashed through his head.
Spike remembered the terror he felt when Caleb had Xander in his grip, and the horror, followed by immense rage when Caleb shoved his thumb through Xander's eye. His beautiful brown eye was now gone, and Spike hadn't been able to prevent it.
A single tear rolled down Spike's cheek. "Don't worry love," he whispered to Xander's sleeping form, "I'll kill him for what he's done to you." He kissed Xander's Cheek lightly, and then walked out of the room, as a small smile appeared on Xander's lips as he slept.