The search results for point toward a few different productions, likely involving a short film or a release of the critically acclaimed 2013 Japanese film that saw renewed interest or specific digital "webrip" versions circulating around 2021. Likely Candidates for the 2021 Title

: A classic body-swap comedy starring Dudley Moore and Kirk Cameron. Like Father Like Son (Video 2021)

: A recent entry in the Gatao franchise starring Sunny Wang and Harry Chang.