Where does the Heaven's Lost Property anime split from the manga? I finished the anime and now I want to read the manga, but what chapter should I start from so that I don't have to reread the same content again?
Read from the chapter where Ikaros and Delta fought Chaos. It differs starting from there. Update the chapter number later.

EDIT: Chapter 31. In the anime, Ikaros was thrown out from the water by her weaponry system. In the manga, she was saved by Astrea.