My Identity as an Entertainment Boss Was Exposed by My Sister

(Start in Chapter 74, Explode in Chapter 77) Between the social and the international, he is the son of an artistic diva and the world's richest man. He is proficient in art, writing, etc., But enjoys art as entertainment. Many fans are extremely obsessed with and admire his songs, novels and other works. But fans are very confused, who could be such a powerful person? But I didn't know until that day that his identity as an entertainment boss was exposed by his sister. (The early stage is a bit dull, but in the later stage, can you be patient and watch it)