Hajimari No Niina. Niina Aoyagi is a 10-year-old girl who has a crush on her attractive neighbor Atsurou Itami who works at her school as a nutritionist. That would not be more than a simple Precocious Crush... If it wasn't for Niina to be the reincarnation of Chitose Amamiya, a 16-year-old girl who died ten years ago and the best friend of Atsurou, whom she had a crush on. Niina would have to resolve the remaining desires of both Chitose and her own feelings.