north abyssor, togawa sakiko, arknights, bang dream!, bang dream! it's mygo!!!!!, highres, 1girl, black dress, black horns, black jacket, black ribbon, blue background, blue hair, border, closed mouth, curled horns, dress, hair ribbon, hood, hood up, hooded jacket, horn ornament, horn ring, horns, instrument, jacket, keyboard (instrument), long hair, looking at viewer, looking back, multiple views, music, outline, playing instrument, ribbon, sidelocks, smile, sparkle, togawa sakiko (master of melodia), white border, white outline, yellow eyes