That’s right: in this book, Rin and Milky take a day off to visit the local nudist futanari beach. With so many dicks around them, the happy couple finds it hard to avoid getting all hot, bothered and erect. Luckily, they manage to find a secluded place of the beach...
As far as I know, this is the first time that Futanari Beach appears in the Futaba universe. And, as you probably know, it became so important that it ended up as the main setting in other series ("Working at the Futanari Beach Police") and individual doujinshi ("Working at the Futanari Beach Bar" and "Naked Futanari Beach Volleyball").
Make sure you read "Working at the Futanari Beach Bar" afterwards because it's a direct sequel to this story.
This time the couple visit a reserved beach just for futanari for the day, and the beach is a nude beach with all the futanari girls showing everything. This chapter also includes a lot of exhibition as the couple puts on a show for several other futas by the end.
Welcome the futanari-only beach. Oh, I hope you weren't expecting any swimsuits. Everyone here is full nude. But for some reason there are boner police so that adds a bit of secretiveness to the foreplay. The sort of kink you get from fucking in a public place but trying to hide it dominates the first half of this book but in the 2nd half Rin and Milky get invited to the secret hideout behind the rocks where all the girls are just fucking eachother openly. As Rin and Milky start fucking eachother seriously some observer girls get right up in their business and get a close view as they jerk eachother off. A similar escalation to Joint Futanari Practice 3. I am always hoping that these escalate into group sex scenes but it ends up being just Rin and Milky with the other girls watching and pleasuring themselves as spectators.
As usual the cocks and balls are incredible but if you're on part 4 of this series you already know that. Futaba Yodomu's art keeps improving as they go tho. I am reading all of their works in release order and this is the best one so far. The art quality keeps getting better and better, I love to see it.