Inside the Tentacle Cave (Manga) Vol. 3 Rated Teen

Students of the prestigious Tokyo Metropolitan Advanced Nurturing High School are given remarkable freedom—if they can win, barter, or save enough points to work their way up the ranks! Somehow, Class D made it through their first semester without anyone getting expelled, and with exemplary marks in both their special tests. Now the second semester begins with a sports festival, where all students—including second- and third-years—will combine into two giant teams to compete for points. This time, the stakes are higher than ever, and Class D will either wind up ahead of their schoolmates, or worse than when they started.