1girl, arm behind back, bangs, black buruma, black choker, black hair, breasts, buruma, choker, collarbone, gym uniform, huge breasts, indie virtual youtuber, looking at viewer, mashiro (rikuya), multicolored hair, open mouth, red eyes, shirasu (mashiro (rikuya)), smile, solo, swept bangs, teeth, upper teeth only, virtual youtuber, white hair