[Machine Translation] While Iori and Chisa's marriage registration fiasco sends shockwaves through the university, the members of PaB go diving in the middle of winter. After the dive, they were supposed to have their annual drinking party to quench their thirst, but there was a problem with the delivery. Suddenly, an "abstinence from alcohol battle royale" breaks out over the few beers on hand! What will the winner get at the end of the extreme battle? The season changes to winter, but the tension remains the same. This is the 26th volume of this nude diving comedy!