(from ebookjapan): A college boy, Ari Yamato, is dragged into a giant ant hill in the Tottori Sand Dunes. He is saved by an old man, Jari, and a young lady, Lilith, and wakes up to find that he is not on Earth, but on an underground world on Mars where insects rule. However, it is not the Earth, but an underground world on Mars ruled by insect men. After pretending to be controlled by the attacking insect people, Ari and his friends are taken to a building that looks like ruins. There, they discovered a time-space transfer device. They activate the device on Jari and travel through space with Lilith. ......!?