Who am I? - A Niall Horan Fanfic

Niall is tired of all the hate! How everyone calls him the ugly member. One day he contacts a scientist - a dark scientist that works with strange and mainly illegal substances.
Niall: ' I want people to like me like they like Harry, I want to be more like him, I want a better personality and a better voice'
The scientist then creates pills for Niall to take in order to become more like harry. But what happens when it all goes wrong? Niall doesn't just just start becoming more like Harry.. he starts turning into Harry!
And their can only be one Harry, so what happens to the real Harry?

But isn't that what Niall wanted? To be like Harry? Well now he CAN be Harry... but before the transformation Niall began falling for a girl.. as NIALL.
What will Niall do? Will the girl still love him as Harry? Will he transform back in time, or will it be to late?
What will happen to the real Harry Styles?