Time Travel and Rebirth as a Girl Control

The soul of a third-rate singer in the 21st century traveled to another world and became a super rich man. Why do I have a super pretty sister, and I'm still a girl girl, right?… Why is my sister still a tsundere? Why is my sister still having N beautiful best friends? Why are you asking me how many wives the male protagonist has? Of course there are only... I don't know either. See how a third-rate singer in the 21st century became the golden touch in the entertainment industry. Write love letters and songs when you have nothing to do. Build a powerful entertainment empire for your sister. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.