Marin, the popular Hololive vtuber, finds herself in a virtual reality sex game, her avatar ready and eager. She's never experienced anything like this, but her curiosity piqued, she starts exploring. Her avatar's body responds to her touch, her nipples hardening, pussy throbbing. She encounters a 3D cock, massive and veiny, throbbing with life. She reaches out, wrapping her hand around it, feeling the pulse. She strokes it, feeling the heat, before guiding it to her avatar's eager pussy. She gasps as it enters her, feeling every ridge, every vein, as it fills her up.