On Netflix itself. If you change the Vpn of your device to pretend you have a Japanese IP, you will be able to see it. There are apps to do that: ProtonVpn for example.
Episode 11 is already out in Japan and I can't believe I watched it when I only understand when they say their names, kawaii, arigato and little more hahahaha...will rewatch once subs are available, but I just wanted to say that there must be more to it. This can't be 11 episodes only and they are hiding it from us!!! π π₯Ί