iinagi (kashiwa keira), togawa sakiko, togawa sakiko (master of melodia), arknights, bang dream!, bang dream! it's mygo!!!!!, absurdres, highres, 1girl, black boots, black dress, black gloves, black horns, black ribbon, blue hair, boots, curled horns, detached collar, dress, frilled dress, frills, gloves, hair ribbon, high heel boots, high heels, holding, holding mask, horns, long hair, looking at viewer, mask, musical staff, phonograph, ribbon, ripples, sidelocks, sitting, smile, solo, two side up, water, window, wrist cuffs, yellow eyes