Includes: Junichi Yaoi's UFO On-site Coverage Vol.1: Horrible Sigma Project—Humans Kidnapped by Aliens, Junichi Yaoi's UFO On-site Coverage Vol.2: A Series of Kidnappings by Aliens. Uncovering the Truth behind Human Experiments!, Junichi Yaoi's UFO On-site Coverage Vol.3: Is there a Child between a Human and an Alien - Explore the Mystery of the Underground Secret Base!!