4K picture quality. The weather is sunny, on a sandy beach. A 9-year-old girl with short pink hair, wearing cute hair accessories, petite figure, poor milk, wearing a blue and white swimsuit, and fair skin. In the shadow of the coconut tree, the younger sister's wrists and ankles were wrapped in a semi transparent tentacle monster using semi transparent tentacles. The tentacles had a thick, milky white liquid on them, and the legs were separated in an "M" shape. A semi transparent tentacle was inserted into the younger sister's anus, and a small amount of semen mixed with a small amount of blood flowed out of the vagina. The vagina opened and the flesh wall inside could be seen. The urine sprayed out from the little hole by the younger sister fell in an arc in the air, and her breasts and nipples were completely exposed. A semi transparent tentacle was forcefully binding one breast, and a small amount of saliva flowed out from the corner of her mouth. Add mottled light and shadow effects to the image.