DS Dengeki Bunko: Iria no Sora, UFO no Natsu is an Adventure game, developed and published by Media Works, which was released in Japan in 2007. it is a sound novel and card game video game for the Nintendo DS based on Iriya no Sora, UFO no Natsu, a Japanese sci-fi light novel series written by Mizuhito Akiyama with illustrations by Eeji Komatsu that centers on the relationship between Kana Iriya, a high school girl who has to fight alien invaders, and Naoyuki Asaba, a member of the school newspaper club and one of her few friends.