Okay so I went into a little rabbit hole going through my childhood songs that i have heard trying to find some songs that suits my OTP ship that is cale and alberu and I ended up finding this two songs.
So when I found these songs the first thing that I thought was this would suit alberu very much because during my craze searching for more songs to add to my OTP ship playlist I was rereading some fanfic where alberu was a girl because there aren't a lot of it.
So my idea for this fanfic is that alberu was turned into a girl after all the white bastard mess was resolved and in the process of getting everything sorted and getting ready for his coronation.
When alberu was turned into a girl he didn't think it would be a big deal because he was still him but just a different gender and he wanted to continue the preparation for his coronation. However the nobles thought differently (well the ones who were old fashioned) because they thought women were weak and fragile.
Honestly alberu was getting annoyed with their bullshit during meetings so he thought of a way to make them listen and he was gonna need help from his wonderful dongsaeng (who he is very much in love with) and his female friends rosalyn, queen of the jungle and jopis.
This plan of his involves making a girl group to perform during the festival in celebration of winning the war to tell the nobles not to mess with him and well the help he wanted from cale was to help design the clothes to make them look elegant and functional.