Instagram/King & Prince Ren Nagase Music King & Prince's "Waltz for Lily" debuts at No. 1 on Billboard Japan Hot 100. The film theme song marks their 16th chart-topper. April 2, 2026 AceShowbiz - The latest single from King & Prince, titled Waltz for Lily, has debuted at No. 1 on the Billboard Japan Hot 100 chart dated April 1. Waltz for Lily is the theme song for the film Oni no Hanayome, which stars group member Ren Nagase. The single opened with impressive sales of 284,138 copies, securing the top spot in physical sales. In addition to leading sales, the track also achieved No.