In this work, Osamu Sawashiro , who retired as a voice actor and became a detective in the wake of a certain incident. He approaches the truth of the incident with his own special ability, an "absolute pitch" that is not absolute pitch. Along with Kaoru Toru, a new detective, and Bainora, who is a non-zero companion, solve the case by relying on the victim's last voice, "Dying Voice". It's a comedic mystery. This time, the voice actors who appear as the victims of the incident are announced. You can't miss the scene of being killed and the scene of "Reproduction VTR" played in the detective's reasoning.

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