togawa sakiko, arknights, bang dream!, bang dream! it's mygo!!!!!, highres, official art, third-party source, 1girl, black dress, black gloves, black mask, black pantyhose, black ribbon, black wrist cuffs, blue hair, blue shoes, couch, demon tail, dress, flower, full body, gloves, hair ribbon, high heels, horns, mask, masquerade mask, multicolored hair, musical note, pantyhose, phonograph, puffy short sleeves, puffy sleeves, ribbon, shoes, short sleeves, sidelocks, single glove, sitting, skirt hold, solo, table, tail, togawa sakiko (master of melodia), transparent background, two-tone hair, unworn mask, wrist cuffs, yellow eyes