四限目は数学 / 初音ミク＋結月ゆかり

Fourth period is mathematics. Music: add9(ヘリP)＋Yono https://twitter.com/heri_add9​ https://twitter.com/yono_P​ Illust:チェリ子 https://twitter.com/chie_rico ●VocalOff https://www.dropbox.com/sh/isc0bc30ffdvpxu/AAA2n2yLpJJEyZpAHLxYJuGda?dl=0 ●niconico(Another ver.) https://www.nicovideo.jp/watch/sm38623492/