yuan quanquan ren, oblivionis (bang dream!), togawa sakiko, arknights, bang dream!, bang dream! it's mygo!!!!!, highres, official art, third-party source, 1girl, black boots, black corset, black gloves, black mask, black pantyhose, black ribbon, blue hair, boots, breasts, chain, chandelier, corset, dress shirt, floating hair, full body, glint, gloves, grey skirt, hair ribbon, high heel boots, high heels, holding, holding mask, instrument, keyboard (instrument), layered skirt, long hair, mask, masquerade mask, medium breasts, open mouth, pantyhose, red shirt, ribbon, shirt, short sleeves, sidelocks, skirt, solo, standing, togawa sakiko's doll, unworn mask, yellow eyes