Velma Dinkley, iconic glasses, short brown hair, face identical to the Scooby-Doo character, ultra-realistic perfect body, (34G heavy sagging breasts, large areolas, pierced nipples), restrained by black veiny tentacles, (hands and feet bound), in an old, dusty, haunted library. Massive, thick, veiny tentacles, (with penis-like heads), penetrate her vaginally and anally, visibly distorting her stomach with the irregular, textured shape of the tentacles, (not a pregnancy bulge), . Orgasmic moaning expression, orange harness garter straps, huge amounts of blue cum covering her breasts and body. Haunted atmosphere with tattered ancient books, floating dust particles, eerie shadows, and dim dramatic lighting. 4K ultra-detailed image, HDR, TTSR2, professional photography, precise anatomy, (perfect symmetry, 5 fingers per hand), realistic textures, NSFW.