Speed Dating Failed! I Raised a Hot-Head Younger Sister into a Diva

Right after breaking up with his blind date, Jiang Feng runs into three so-called delinquent girls on the street. By a strange coincidence, he discovers that his own voice, which was hopelessly off-key in his past life, is now unexpectedly excellent. But instead of using it for himself, he chooses to make them famous first...