3-second video. Maintain user's hips slamming into Riko's buttocks with a natural and steady tempo. Maintain firm, mid-paced rhythmic thrusting motion driven entirely by the user. Maintain the state of each impact being forceful and clear. Maintain Riko's body being shaken and bouncing from the consistent physical pressure. Maintain Riko's mouth wide open and wide-eyed ecstatic expression fixed in place from the image. Maintain the steady and realistic speed of the action throughout.