Iriya no Sora, UFO no Natsu
English title: Sky of Iriya, Summer of UFO
Japanese title: イリヤの空、UFOの夏
Type: OVA
Episodes: 6
Source: Light novel
Genres: Drama, Romance, Sci-Fi
Studios: Toei Animation
Producers: Happinet Pictures
Duration: 27 min per ep
Rating: R+ - Mild Nudity

Asaba Naoyuki is an ordinary high school student. As a member of his school's press club, he's just spent the summer camping outside the local military base, in hopes of seeing the UFOs that are secretly kept there, according to local legend. Returning to school, he meets a strange girl, Iriya Kana, and gradually comes to realize that she is more than merely strange - and that a dark secret lies beneath the world that he knows.

(Source: ANN)