In a quiet little town surrounded by the mountains, Tomoki Sakurai lives a peaceful life with his somewhat Megaton Karate Chop-prone childhood friend waking him up in the morning. That, and the recurring dream of a girl in the sky. At the same time, school eccentric Eishirou Sugata has been witnessing an unidentified thing moving above the Earth, with nobody able to figure it out. Through a series of circumstances, Tomoki ends up being the only one around when the thing falls to Earth near his hometown. In it is a girl in skimpy clothing with angel wings, calling herself an Angeloid. Her name is Ikaros. Things just got a lot more interesting...whether our hero likes it or not.Sora no Otoshimono was created by Suu Mikazuki (who previously wrote Watashi No Messiah Sama), and received an anime adaptation in the fall of 2009. A second season, Sora no Otoshimono forte, aired in the fall of 2010. The Movie (The Angeloid of Clockwork) was released in theaters in 2011, and a third season has been greenlit.Funimation has licensed the first two seasons of the anime and the movie under the name "Heaven's Lost Property". You can find it here.