Sora no Otoshimono: Doki-doki Summer Vacation

Tomoki Sakurai is a lad who lives in the quaint little town of Sorami. Life is quiet so Tomoki gets his kicks by being a peeping tom who has a number of prime viewing areas that he has mapped around town. Tomoki would be content to live this way forever, but one night a strange event changes his life forever.

While watching the sky and waiting for two friends, from above an object falls from the heavens which turns out to be a female being known as an Angeloid. Her name is Ikaros and she sports a shock of pink hair, angel wings, and a large bosom.