Assistant x Singer
I found many similarities towards the concept of these two while I rewatched Accidentally in Love. Not only does the singer not get to sing the types of songs he likes but the assistant and singer both start out as disliking each other. Differences between these two is that Accidentally in Love is more comedic based while The Brightest Star in the Sky has a more serious feel.

There's not much similarity but I got reminded of Fall in Love with Me when I was watching The Brightest Star in the Sky. Many songs of the soundtrack is also sung by the male lead which are pretty good.
- Both of the male leads are rich with the female leads struggling with money (sorta)

Somewhat of similar situations. Family issues...Finding love... Female main lead both have strong and independent characteristics. I get the same feels when watching the dramas.

One is a Chinese Drama.
One is a Korean Drama.
But both are sports related and shows the development of relationships