" The angel destroyed me! He seduced me with a pure voice, spoke kind words, and stroked my hair to lower my guard, to make me trust him, to trick me! He sullied my body, my voice, my heart; remade me as a terrifying monster; turned me into his companion! The angel was a disfigured phantom wearing a mask! "

― Mizuki Nomura , Book Girl and the Corrupted Angel (light novel)