Post-Covid = Pre-Covid.
Working from home helped during the pandemic. 'Post-Covid' means 'After Covid'. Once Covid is done and dusted. When it is not a problem. That appears to be now in the UK, where we seem to be living with Covid as we are living with HIV and Hepatitis. Check out how many fans are wedged into the footy at the weekend. That doesn't yell pandemic, does it? So why is home working 'needed' post-Covid?
Japan is not yet 'post-Covid', but once it is, there is no reason to continue with Covid-era behaviour like social distancing, bans on crowds or home-working.
Hybrid options are great for those who want them and can still be productive, but 'post-Covid', they will be entirely unnecessary on biomedical grounds.
Incidentally, despite the football crowds, I would still urge general caution and mask use, even if the clowns ruining/running the country do not, as Covid has not 'left the building' quite yet in the UK.