On January 4th, Johnny's & Associates announced that Aiba Masaki missed the recording for the January 14th and 21st broadcasts of his regular program 'VS Damashii' due to his poor health.
On January 3rd, Aiba made a live appearance on the first episode of 'VS Damashii' which was a three-hour live broadcast special. Later that night until the next morning, he wasn't feel well so he took the PCR test. The result came back negative, but he decided to be absent from the program recording on the 4th as he felt fatigued and had a low-grade fever.
As such, Ninomiya Kazunari was the stand-in for the program's January 14th broadcast, and Murakami Shingo for its January 21st broadcast.