Figured out the online concert event page URL two days ago:
https://stagecrowd.live/s/live032/
This archive is available for one week.
Stagecrowd is a fairly new online concert platform from Sony utilizing the Brightcove video player. Tech support is officially limited to within Japan (per the
site’s FAQ), but you do not need a VPN to access the stream.
Your Stagecrowd login is specific to that event page. To sign up for another event hosted on Stagecrowd, you have to create another login. Dumb, I know.
Foreign credit cards (should) work. Just not debit.
I’ve heard from other people Stagecrowd will prompt you to enter a Japanese address, in which case you need Tenso or another forwarding service, but I only recall having to select a prefecture during registration.
Stagecrowd has the feature to allow the performer sell concert merch directly on the platform, if they choose to do so—no overseas delivery, though.