Solid story so far.
Basically dude is a guy who worked really hard wanting to be a idol. However due to having a controversial event in his past(dirt on him) and due to not having a good enough appearance, he is unable to secure a spot despite his exceptionally developed dance skills.
He then is given a opportunity via a special medicine/bath bomb that can turn him into who he was in a past life. Supplied to him by a new subsidiary of a popular idol company, who is willing to give him a chance with a new identity(that was not tainted by the past event).
It works out in that he becomes a knockout beauty, but has a setback in that this body does not have the same levels of talent or conditioning. Requiring him her to effectively relearn from the ground up.
This change also can be reversed with a different bath bomb, which leads to a dual identity.
This story engages with the genderswap in a well reasoned way. The difference matters, but it's not a caricature or fanservice.
For those who engage with genderswap stories for representation or self insert/fantasy: I am sure you will have rose colored interpretations, but I don't think the story this far in is really like that(cough no eggs).
But you still will probably enjoy this significantly.
For those avoiding on the nose stories the above seek, this does not appear to be that kind so far, so you also will probably enjoy.
This is just a story about someone who is so devoted to their dream of being a star, they are even willing to change everything about themself they need to accomplish it. To even abandon who they once were.