Yamamoto Sayaka is from NMB48. In her new music video 'Joker'. She dresses as a 'guy' version of herself and has a 'girl' version of herself, and erm, they meet in the middle. Stuff happens.
Also the album covers for 'identity' are pretty awesome too.
'identity is Yamamoto’s sophomore studio album following the release of the 2016 hit Rainbow. For identity Yamamoto participated in both writing lyrics and composing music. She collaborated with various iconic musicians including Seiji Kameda and Ikimonogakari member Yoshiki Mizuno'