In a world ruled by a corrupt pope and his loyal priests, Hamuratto can no longer stand idly by. When he kills one of the weaker priests, Belial, Hamuratto finds himself on the run, hunted by the pope's forces. Desperate and cornered, he is forced to kindle the flame of hope in the darkest place.

Hamuratto strikes a pact with Lucifer: deliver 1,000 innocent souls for access to Lucifer's legendary techniques. These techniques unlock a mathematical game called Demonic Dice, where players can win powerful organs. Hamuratto's goal is to win a heart worth 500,000 Adam's Energy, giving him a legit  chance to overthrow the pope. However, mastering the game's complex mathematics is his greatest challenge.

Hamuratto grapples with learning while haunted by the souls he sacrificed. Pursued by Segi, armed with a powerful heart, can he master math and Demonic Dice before Segi's vengeance consumes him? In a world on the brink, rebellion offers a glimmer of hope.

Papararudo Samyueru lives in a city that is divided into three different regions: the upper-class region, the middle-class region, and the lower-class region. Members of the lower-class region have to give up their firstborn child to the government in exchange for not being able to pay taxes. However, they are given a promise that if the family can accumulate a large sum of money during their lifetime, they will be able to buy their firstborn child back from the government. PapararudoSamyueru is determined to join the army, which is one of the highest-paid jobs in the city, in order to buy his older sister back from the government. He wants to work his way up to the highest rank in the army, which is known as the pope of the city. As the pope, he wants to create a world that is free of discrimination and wants to combine all three regions into one.