[DeepL Translation - needs review] Introduction to Volume 1: Peace has been restored on Earth for a while after the Demon Shogun's re-entry was prevented. Then one day, a mysterious monster metahuman appears before the new generation of justice metahumans, the architects of peace, who have been training to prepare for a crisis yet to be seen! ... The sons of the "legendary superheroes" now begin a mission that transcends time and space...!
(Translator: DeepL)
