If you add the first week sales of "Kibouteki Refrain," the total sales for AKB48's singles have reached 31,111,000 copies since their debut back in February 2006.
They're the second artist to achieve the 30 million sales figure for singles after B'z (sales figure: 35.443 million copies). AKB48 is also the first female artist to have a total of 30 million sales for singles.
Moreover, reaching 30 million sales in 8 years and 10 months since their debut is the fastest record in history as it took 14 years and 7 months for B'z to reach the number.
The group also holds the records for both consecutive and total number of million-selling singles, and those records have been improved as well (19th consecutive, and 20th million-selling singles).
"Kibouteki Refrain" also allowed the group to better their records for "the number of consecutive & total chart-topping singles" for a female artist, as the single is their 25th consecutive chart-topping single.
Source & Image: Oricon