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To kill off a villain in your fiction, either right after turning them into a good guy or before revealing that they actually were working for the side of good all along (usually meaning they were a spy, watching the real villains from the inside of their evil organization.)
This word originates from the name Masashi Kishimoto, the author of the popular manga series Naruto
I can't believe J.K. Rowling decided to Kishimoto Snape!
by Namahagetecno June 20, 2008