This is the 2nd edition of the C1 base game in Japanese.
Möbius is the local publisher. They have not released much in terms of carc games, so I've been trying to track down everything in order to have their full library.
They've got:
C1 base game (1st edition has the older box art, and then this 2nd edition with updated box art, the pig in the field and the meeples at the top)
C2 base game (which comes with the Japanese buildings expansion)
C3 base game (which is called Carcassonne '21)
Carc20
Hunters&Gatherers '20
Out of the above, I'm just missing C3, but @Decar has got a copy waiting for me, and the H&G, which should be on its way
Ow, and fun fact;
This delivery, together with the Carc I bought in Carcassonne, now has taken the museum to over 12k tiles