Three of Spades

Mamiya Chiaki, a high school senior who has accomplished nothing, often wants to escape from this annoying reality because he can never compare to his outstanding younger brother. One day when he was fooling around with his best friends Shimazaki Yu and Suzuki Jin, he witnessed a huge fireworks. Unexpectedly, he stepped into a strange world and inexplicably joined a [game]. In order to survive in this world, they must participate in the game and win the three of spades in the [Land of Spades].