A vocal single by "Mikoto (CV: Natsuki Hanae)" is released as the Third Trial single of the viewer-participation music project "MILGRAM"! Following the previous singles, it also includes "Chimera" as a cover of a song by DECO*27, along with an original voice drama written by the original author Yamanaka Takuya. This is a long-awaited single for fans of "MILGRAM," which has reached its Third Trial and is entering the climax of the story. Comes with a slipcase and an eight-page booklet.