Sachiko Wakamori (若森さちこ, Wakamori Sachiko) is a percussionist best known in the VOCALOID community for her performances as part of MKP39 at the 2012 VOCALOID concert Miku no Hi Dai-Kanshasai in Tokyo, Japan, and at the Hatsune Miku Live Party Kansai 2013 concert. ...