Domoto Shigeru studied painting when he was in Sapporo. Deeply grieved that a woman succumbed to the charm of his colleague, Shigeru began to paint and decided to enter the world of painting.

This monarch is the strongest warrior and the aloof judge! 2000 years ago, five heroes and the guardian god King-Ohger defeated the Underground Empire Bugnaraku and saved humanity. Afterwords, the Shugods and five countries were created, and the five heroes became rulers, presiding over a long era of peace. However, in the year of the prophecy that the Bugnaraku would rise again from the depths, the empire was revived. The rulers were unable to unite despite the looming extinction of humanity. Then Gira, calling himself the "Evil King", miraculously revived God Kuwagata and drove back Bugnaraku. However, Gira is declared an internationally wanted criminal for stealing the Shugod. Rita Kaniska, the chief judge and monarch of Gokkan, a neutral country of ice and snow, begins their journey of adventure and conflict in search of the fugitive Gira! (Source: Toei Tokusatsu Fan Club, translated)

The manga depicts the past of Ishiro Meita, a freelance spy who graduated from a spy training school with top grades. When he's asked to investigate an unknown object that crashed from space, his life takes a drastic turn when he meets Taiya Hando.

3000 years ago, the Vader Clan devastated Denji Star. Denjiland, an island from Denji Star, landed on Earth. In modern times, the computer of Denjiland awoke the Denjidog IC when it detected the Vader Clan approaching Earth. IC found five young people to become the Denshi Sentai to help defend Earth, the Vader Clan's next target.