The fourth installment of the Amateur excavation series is Fumika, an aspiring model who has competed in national swimming championships! Under the pretense of shooting a video of her tropical vacation memories, she proposes a swimming contest on the beach and negotiates for an adult video appearance! "I can't believe I'll lose... but it's a competition..." She becomes more open-minded while on the trip and decides to appear in an adult video! While nervous about having sex for the first time in a while, she moans a lot as the actor's skilled techniques make her! "Was that the best sex of your life?"