Today's top could be tomorrow's bottom when playing the caste game!

School is hard enough as it is, but when students are forced to play a cutthroat game to determine their social ranks--and subsequent treatment--all bets are off.

Another summer has passed, and fall's arrival brings with it the excitement of the school's culture festival! It's fun event after fun event, with Karino and Azusa cosplaying, Kuze joining a band, and Atsumu discovering his feminine side. But while everyone is enjoying themselves, third-year eccentric Eno is cooking up a dastardly plan! Just how long can Karino protect Azusa from someone so bent on revenge?