The season of the cultural festival begins. Tsuzura and Yukimi volunteer to run a gambling den at the Ryouran Festival, but assassins from the Zen Saki Association appear. The proposal from the assassins is a humiliating gamble called "surreptitious strip poker"... In contrast to Yumeko, it's a twin (Tsuwin). This is the 7th volume of "Kakegurui" featuring Saotome Meari, who steps up for her friends.