District 88 is a fictional setting from the anime and manga series Kyoukaisenjou no Horizon. It is depicted as a futuristic military academy located in a post-apocalyptic world. The district serves as a training ground for students who aspire to become skilled warriors and leaders. The academy is known for its advanced technology and unique curriculum, which includes combat training, strategy, and diplomacy. Students often engage in various competitions and missions, honing their abilities to prepare for real-world challenges. The setting combines elements of science fiction and fantasy, creating an engaging backdrop for the characters' development.