This marked their 2nd consecutive million-selling album.
They achieved it 16 days after the album went on sale, and it is the fastest record for the group's history (for albums), as their previous album "1830m" reached a million copies 33 days later from the release day.
This is the first time in 6 years and 8 months for a female artist to have 2 consecutive million-selling albums, since it was last accomplished by Koda Kumi in 2007, and for a female group, it is the first time in over 15 years.
Takahashi Minami made a comment, "We are very happy, and grateful to you fans that we were able to reach a million copies. Thank you very much. All of us members realize how we need to continue trying our best in order for us to respond your support."
"Tsugi no Ashiato" contains the group's 7 previous singles, as well as many new songs. During the first week, it sold 962,000 copies which was the best record for the group.
Source & Image: Oricon