Kamisama Kazoku Ouen Ganbou

Kamiyama Samatarou is not just an average high school boy. The truth is that he is the son of a god, his mother is a goddess and his sisters are candidates to become goddesses. They are living in the human world, because they want Samatarou to learn about human customs and their habits, so that he can become a better god.

Tenko is an angel assigned to look after Samatarou. She was born at the same time as Samatarou and they have always been close friends. Life goes on normally, but this changes with the appearance of a transfer student named Komori Kumiko. Samatarou falls in love with her and decides to make her his girlfriend — without the godly powers the rest of his family possesses. Now if only his family would stop trying to be so helpful...

[Edited from ANN]