Includes episode reviews and parent's guide.

Rated 5/5. "A brilliant anime. It's somber, moving, compelling, and ultimately, quite enjoyable."

Rated A+ by Tasha Robinson. "As it reaches its halfway point in volumes three and four, Key: The Metal Idol shows no signs of slowing or wandering."

Rated A+ by Tasha Robinson. "Sato ends each episode on a pause, a moment of sudden recognition and welling emotion between moments."