Aoi Sekai no Chuushin de

World War Blue

Aoi Sekai no Chuushin de fanservices
Segua Kingdom has been losing the war against Ninterdo Empire but the tables are turned by the appearance of a boy called Gear. All the characters are parodies of Nintendo or Sega games such as Sonic the Hedgehog, Super Mario Bros., The Legend of Zelda etc.