but they are not Kamen Joshi yet))

"Kamen Joshi became the first independent female artist to achieve a number-one single on the Oricon Weekly Singles chart in January 2015, achieving sales figures of over 130,000 copies of their single "Genkidane☆"."

Oricon weekly results (30/05/2016 - 05/06/2016)
http://www.oricon.co.jp/rank/js/w/2016-06-13/

1. 1,440,771 AKB48
2. *,*49,090 Flower
3. *,*39,841 Boyfriend
4. *,*21,850 Tokimeki Sendenbu

Muteki no Uta
Weekly USEN HIT Indies Ranking #1
Weekly USEN HIT J-POP Ranking #9