Weekly:
*1 150,944 KAT-TUN
*2 *93,828 Perfume
*3 *73,890 DiVA
In comparison:
No Sleeves - Answer: 81,846
WH7 - Valentine Kiss: 95,321
FK - Kakkowarui: 112,546
Not Yet - Shuumatsu: 159,678
Itano Tomomi - Dear J: 162,871
Keeping in mind that this is their debut single they did really well imo. I was expecting around 50K and they got 73K!
As far as debut sales go, only Not Yet beat them, so who knows what DiVa can achieve in the future.