The plot revolves around Tomoki Sakurai, a boy who desires to live a peaceful life but encounters a fallen girl with wings, named Ikaros, who becomes his servant.

He finds it difficult to live in comfort when he has to put up with Sohara Mitsuki, his next-door neighbor with a killer karate chop; Eishiro Sugata, an eccentric pseudo-scientist bent on discovering the "New World"; and Mikako Satsukitane, their school's sadistic student council president.

77] In 2006, Suu Minazuki's previous manga Judas had ceased publication in Kadokawa Shoten's Shōnen Ace magazine with a total of five volumes.

As the publication of Sora no Otoshimono was geared for a wider shōnen audience, Minazuki made some adjustments such as posting warnings to his readers to skip the chapter when it contains obvious nudity themes, and placing censor boxes and ovals over exposed body parts.[ch.

In addition, a four-panel comic, titled Sora no Otoshimono Pico (そらのおとしものPICO, Sora no Otoshimono Piko), illustrated by ms, was developed and published in the inaugural issue of Kadokawa Shoten's 4-Koma Nano Ace magazine (published on March 9, 2011), and continued in Shōnen Ace until its conclusion on March 26, 2011.

An OVA episode entitled "Project Pink" was bundled with the limited edition release of volume 9 of the manga on DVD on September 9, 2010.

[18] However, due to concerns from the Japanese licensing company regarding Blu-ray sales, the second season was released only as a 2-disc DVD set in North America on March 20, 2012.

[4] Funimation Entertainment licensed the film under the title of Heaven's Lost Property the Movie: The Angeloid of Clockwork, and released it on February 26, 2013.

[24] A sequel to the light novel called Sora no Otoshimono f, written by Rin Kanzaki and illustrated by Minazuki and Ayun Tachibana, was released on October 1, 2010.

[26] Another game developed by Kadokawa Shoten called Sora no Otoshimono Forte: Dreamy Season (そらのおとしものf(フォルテ) Dreamy Season, Sora no Otoshimono Forute Dorīmī Shīzun) was released for the Nintendo DS on January 27, 2011, with gameplay of a visual novel plus some mildly sexually suggestive mini-games.

[27] Several types of merchandise have been produced based primarily on the female characters of Sora no Otoshimono; they include: figurines, T-shirts, keychains, and body pillows.

Nojiri, along with OpenSky's media artist Kazuhiko Hachiya, director Hisashi Saito, and TBS announcer Jun Suzuki also attended the event.

[34][35] With the broadcast of the Sora No Otoshimono Forte anime season, the January 2011 issue of Newtype featured Ikaros as the most popular female character, with Nymph at #7 and Astraea at #9.