MIKIO FUJIOKA aka Ko-Gami of Babymetal's backing band, Kami Band passed away a few days ago on 1/5 due to a fall from an observation deck on December 30th.
You may remember Babymetal opening for Red Hot Chili Peppers at Verizon Arena on 4/22/17
More info from Blabbermouth.net - http://www.blabbermouth.net/news/babymetal-guitarist-mikio-fujioka-dies-at-36/