(((full body image:1.2))), of four, (4), (((fully naked))), girls of a j-pop group, (((proudly showing erect cocks))), 21 years old, tall, slender, fully naked, (entire bodies visible, from head till feet), dancing in sneakers, standing and singing on stage, holding microphones joyfully waving and smiling at audience, dancing on stage, necklaces, long messy hair, different hairstyles and haircolors, tatoos, flashlights, audience, sweaty skin, vaginal lips visible, happy and detailed faces, smiling and making signs to audience