. . "The One and Only OST" . . . . "16" . . "2021-12-20" . . . . . . "4200.0" . "The One and Only" . . "2022-02-08" . . . . "''The One and Only'' (South Korean TV series)" . . . "The One and Only (South Korean TV series)" . "The One and Only (South Korean TV series)" . .