If you're looking for anime similar to Sora no Otoshimono, you might like these titles. All recommendations are made by Anime-Planet users like you!
While trying to protect a wooden relic, high school student Yuuri Mito summons the Goddess Kikuramikami no Hime in the form of a sweet, affectionate child; she begins to live with him, taking the name Mashiro. Yuuri promises to marry her when she grows up, which unfortunately for him happens overnight! However, they soon have bigger things to worry about, as the relic is accidentally destroyed, unleashing the Tayutai, a human-hating race of monsters. Along with Yuuri's childhood friend Ameri, his step-sister Yumina and Mifuyu - an honour student at Flawless Girls' Academy - Yuuri and Mashiro must step up to fight the Tayutai, protect the world, and even learn about underwear!
A young woman quietly falls to the earth, escorted by a solitary crow. This sort of dream, as many other before have dreamed, comes just before being reborn as a Haibane, a charcoal-winged angel. On the outskirts of the walled-in city lies Old Home, a haven for Haibane to study, live, and learn, while waiting for their chance to ascend to the heavens and escape the confines of their new world. Rakka is the newest inhabitant of Old Home who wants nothing more than to remember her past and discover the secrets of her kind. Together with Reki, Kuu and plenty of other new friends, Rakka will laugh, explore, and search for the meaning of their existence in the process.
The timid, virginal Kouta is a new student at Kunpo High School; and while others in his situation might be a wallflower forever, Kouta has no such luck – he has attracted the attention of the busty Chizuru, who happens to be a fox deity! However, Kouta’s misfortunes don’t stop there; he’s also pursued by Nozomu, a wolf deity. Between being molested, propositioned, having his face shoved between mammoth breasts or witnessing endless panty shots, Kouta must also attempt to maintain his studies – even though all Chizuru and Nozomu want is to be the one to deflower him first!
Both these titles are wrapped up in Ecchi and humour. Although Kanokon is more 'tame' than Sora no Otoshimono both are somewhat of a fantasy/sci-fi type romances. They both show different sides of their story, with Sora no Otoshimono having an aggressive (trying to get girls) protagonist and Kanokon having the passive (trying to be won over) protagonist.
Morisato Keiichi has always had bad luck. No matter what he does or how he acts, nothing seems to go his way. His bike frequently breaks down, his classmates take advantage of him, women ignore and scorn him, and on top of all that, he’s only 5'3". In Heaven, when someone’s bad luck and good luck are so heavily out of balance, Belldandy (Goddess First Class, Second Category, Unlimited) of the Goddess Assistance Agency comes to the rescue. Belldandy grants Keiichi one wish to make up for all of his bad luck, but when Keiichi wishes for Belldandy to stay by his side forever... the trouble begins. Can Keiichi keep Belldandy by his side, or will outside elements force her to return to heaven?
These both have similar concepts in that there is an angel/goddess that descends from the sky and spends the rest of the series with the main character. While Sora no Otoshimono is more echhi based and Ah! My Goddess is much less sexual but is built on romantic tension between the two main characters. If you like one then you'll likely enjoy the other.
F City, F Prefecture: the battleground where good and evil have finally chosen to decide once and for all who will rule the world…or at least that's the general idea! Neither side seems up for the task, as surviving the brutality of everyday life is enough of a chore. On the side of evil is the organization of Across, its only member the loudmouthed and abrasive Excel who struggles just to put food in her stomach; on the side of good, three disenfranchised, unemployed bachelors whose only pursuit in life is romance. Add in alien invasions, jungle warfare, and Mexican immigrant laborers to Japan, and this war doesn't seem likely to be ending soon!