Also New Horizons is now the best selling game of the franchise at retail in Japan.
Wild Worlds LTD was 5.241.655
Which also makes New Horizons the 8th best-selling game of all time.
Next game ahead is Ruby/Sapphire at 5.337.045 LTD
I think New Leaf is the best selling Animal Crossing at retail in japan with 5'790'000 units ranking as the 6th best selling game of all time.
(Chart updated on the 4th of June 2020)