The top of today can become the bottom of tomorrow when the game of social classes is played! School is already hard enough, but when students are forced to participate in a relentless game to determine their social ranks—and subsequent treatment—everyone is at risk. During the class's annual trip, Azusa is placed in the same group as Atsumu and Kuze. While the three of them enjoy the sights in Kyoto, someone repeatedly tries to harm Azusa. It won't be long before Karino, Azusa's knight in slightly worn armor, arrives to save her. The two of them spend the rest of the trip alone, with their relationship undergoing a significant change!