Uchuu Shounen Baruji

A once peaceful planet, Industria has endured fifty years of war and conflict due to contact with alien species, reducing the ruling royal family's control to only the planetary capital. Astro, a destitute living in the capital's slums, works a difficult job to support his family. He is approached by Baruji, the prince who wants to escape his royal life. Baruji and Astro are nearly identical in appearance and voice, and the prince suggests Astro take his place. Soon after, guards arrive, mistake Astro for Baruji, and take him to the planet. Astro is thrust into the role of royal heir and faces the challenge of leading a planet at war.