Still nobody has it.
Guesses:
Takeuchi Miyu
Kuramochi Asuka
Oshima Yuko
Sugamoto Yuko
Maeda Ami
Kimoto Kanon
Ishida Haruka
Kodama Haruka
Iwasa Misaki
Matsuda Shiori
Furukawa Airi
Kadowaki Kanako
Kinoshita Haruna
Hiramatsu Kanako
Kondo Rina
Komatani Hitome
Let's narrow this down some more: She's definitely a member of NMB48.