IZ*ONE announced "RUMOR" as a competition song of Mnet "PRODUCE 48", 1st place as song most covered by K-pop fans in October was acquired. WEKI MEKI "CRUSH" in 2nd place, BTS "IDOL" in 3rd place, IU "BBIBBI" in 4th , SNSD (Girls Generation) Oh! GG "LIL'TOUCH" in 5th place.