Future Diary has 7 seasons so far and I think they are all complete and there will be no more seasons after this one. The series started on September 6, 2016 and was originally released on Netflix on September 27, 2016. The show stars Sunny Mabrey as Mia (Mia was introduced as an 11-year-old child prodigy). She's smart and popular at school, but her dad died when she was just 10 years old and her mother has moved away with her sister Jemma (Lucy Liu) who's just turned 13. They still see each other often but her mom is really distant from her and doesn't seem to care much about her daughter Mia's feelings or emotions. Mia has always had her feelings hurt by Jemma who acts like she's grown up way too fast and has no idea how it feels to be a kid anymore.