The Mysterious Underground Men

Chiteikoku no Kaijin is a science fiction manga depicting the struggle of boy-scientist John and his friends against people of the underground, who are plotting to take over the Earth. John invents a safe, high-speed, earth-penetrating train to fulfill the final wishes of his father, who died in a plane crash. One day John meets Mimio, a rabbit with human-like intelligence, and together they head to the center of the Earth in the newly completed rocket train. But when they get there, they disc...

Chiteikoku no Kaijin was published in English as The Mysterious Underground Men in hardback by PictureBox on November 30, 2013, as the second volume in their "Ten Cent Manga" series.