The little tyrant of Heaven was kicked down to the mortal realm for being too much trouble. To make a name for herself, she casually maxed out her "original musician" skill and took the music scene by storm with her talent.
When they first met, they were trainees in a battle for a chance to perform, their eyes stubborn even as they fought desperately for a stage opportunity. Later, she became their assistant and their strongest supporter.
Immortal arts could solve their problems, and capital could pave their way, but more precious than either was watching them grow from naive kids into top-tier stars who could stand on their own.