First Day — a new Hulu series about a 12-year-old transgender girl, Hannah (Evie Macdonald), beginning high school — was inspired by a “very close family member” of creator Julie Kalceff.This family member had a 6-year-old who was transitioning, and her mother “was wanting to support her and to do the right thing by her but wasn't quite sure what that was,” Kalceff said.“I thought, wouldn't it be great if there was a children's television episode so that this girl could see someone like her on TV, and this family could know that they weren't alone," she recalled.So, Kalceff created a short film about this subject in an initiative with Australia’s ABC network that was timed to the 2017 International Day of the Girl.