"HAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH!" Nagisa screamed as he raised the knife.
His heart was thumping rapidly and tears flowed down his face like a waterfall. His eyes were wide and he looked like a mad man. Understandable. He was about to kill the teacher he had learned with, played with and tried to assassinate for the past 2 years. That kind of emotional attachment isn't easily broken.
A yellow tentacle suddenly reached out and touched Nagisa's neck. Nagisa stopped yelling, arms in a raised position, holding the knife, eyes still wide. "Don't kill me feeling like that. Calm yourself. Smile," Koro Sensei said as tears formed in Nagisa's eyes again.
Shaking, Nagisa started to weep. Memories flowed through everyone's head. The good, the bad, the silly, the scary. Holding back the tears, Nagisa smiled. "Goodbye Koro Sensei."
"Yes… Goodbye."
And Nagisa pushed the knife though his heart. Koro Sensei's body glowed yellow, and started to fade away in small clusters of yellow balls. And everyone started to cry…
