My Sister Stole the Requiem I Wrote for My Grandfather.

The requiem I wrote for my grandfather was stolen and turned into a DJ by my sister. She also claims to be a disciple of K, the anonymous music tycoon. Overnight, she became popular all over the Internet. My parents and brother said, "Our Yaoyao is a disciple of K, the most mysterious god in the music industry. She is the proud daughter of heaven and the brightest king in the future music industry!" But I was ridiculed by them as a nerd, with no future, and could only be a rat in the ditch for the rest of my life. I laughed angrily. I don't know, when did I accept her as my apprentice?