Continued story from Nudist Beach ni Shuugakuryokou de !! The Animation. Where they are while on a sightseeing trip, they stop by the Sex Beach. Beach that allows everyone to have sex as freely as a boyfriend or spouse. This time the story is more specific to the MILF teachers of their mentors. (Source: Nekopoi and Has Been Translated)
Watch Yarimoku Beach ni Shuugakuryokou de!! THE ANIMATION episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.