Kirk here with bad news for people outside of Japan hoping to return:
“In a stunning move, the transportation ministry Wednesday directed airlines to halt reservations for incoming flights to Japan for one month amid growing fears over the omicron coronavirus variant. The ministry described the move as ‘an emergency measure.’ People with existing bookings will still be able to fly into Japan.”
In the past, residents of Japan with foreign passports have been excluded but this is the first time I’m aware of where Japanese citizens will also be unable to return until the ban on new reservations is lifted.