The premise of this story is kinda complicated and I can’t quite recall exactly how it works but basically there’s two friends and one who is popular amongst everyone and he suddenly turns into a girl. In this universe, I may be botching the details but, it is normal for some boys to turn into girls but it usually happens at an early age. Anyways the two friends fall in love and follow them on their road during school and once they get out into the real world.
Kanojo Ni Naru Hi