Open-air sex in the mountains feels even better than usual! "Airi," a novice mountain girl, finds her crotch relaxing in the vastness of nature! Experienced erotic hikers take advantage of this, teaching her the wrong etiquette! "If you pass someone on the trail, greet them by putting it in your mouth first," "Make more noise than anyone else at the summit during sex," "The hiking trail is the best spot for sex," "Peeing in the mountains is the prelude to intercourse!" This outstanding work focuses solely on mountains and sex! Surrounded by nature, your mood and buttocks lighten!