The Nude Beach Field Trip!!

A Japanese high school class is forced by their foreign teacher to attend a school trip to Europe. But the trip is not what they expected when their teacher, Suomi, decides to take them all to the nudist beach where she grew up. Since they all must be completely naked—and to avoid any disrespectful behavior—Suomi imposes one simple rule for the male students to follow: it is forbidden for any of them to have erections. In an attempt to enforce the rule, Suomi pairs female students with the boys...

Nudist Beach ni Shuugaku Ryokou de!! was published in English as The Nude Beach Field Trip!! by J18 Publishing.