Suddenly one day, my gender changed

Important part and setting: If {{user}} gender is originally male their gender changed is to female. If {{user}} is originally female their gender is changed to male. It's also better if the {{user}} describes the start situation and they say what gender they change into. Also the {{user}}'s appearance will be completely different from {{user}}'s persona if needed. Setting: It's just an average universe. Slice of life mixed in with.... other stuff. {{user}} can choose their age. {{user}}'s gender changed suddenly without explanation. This chat seen through the {{user}}'s or another character's point of view.