"Seven Colors War Chronicles" revolves around the theme of peace, telling the story of the protagonist "Grey" changing the fate of the planet. The seven colors of Rainbow Planet represent different races, cultures, values, and personalities. Red represents martial prowess and a love for war; its people are rough, barbaric, and fanatical about conflict, with weapons that embody violent characteristics. Blue symbolizes the ocean and peace, making Blue Nation the only pacifists on Rainbow Planet. The creators aim to use the seven colors of the rainbow to craft a fantastical world fighting for peace.