At first, she didn’t feel the need to. Okay so when she first became a girl, she was still in shock and she didn’t tell anyone except her closest relative and left town and moved to another replace. She also cut off all ties with Ritsu so she thought that he would just dropped their friendship and moved on with his life. She thought their friendship didn’t mean that much to him since he’s on another country and she cut off everything with him and that’s really mean. And she thought they would never meet again bc he’s in America now. But when she saw him again, she did want to tell him and she tried to. She didn’t hesitate and actually wanted to tell him the truth but each time she tried to someone would cut in. And then she start discovering like his true feelings and how telling him isn’t going to as simple as she thought bc now there’s other people involved like Maya. I hated how Maya used their “friendship” as a way to guilt her into admitting there’s nothing going on between them. And I think right now Izuki is scared to tell him bc one he used to like her and she’s scared that the person he was looking for was the boy version of her and if he knows the truth it will be very awkward
That's a very detailed answer, thank you
Erm it seems I kinda forgot the story what was her reason for not telling him her real identity again? Does she even have one?