Fate Graphite lives miserably as a gatekeeper in a world where skills given at birth determine an individual's entire life. Afflicted by the seemingly harmful skill Gluttony, which makes him perpetually hungry, he is abused by the holy knights—the supposed protectors of the populace—who view him as a dreg on society due to his skill. However, Fate's destiny takes a dramatic turn after he kills an escaping injured thief. To his surprise, Gluttony activates, enhancing his stats and granting him new skills. Following this epiphanic event, Fate receives a job offer from Roxy Hart, the only benevolent holy knight in the city, which he happily accepts. Eager to further explore Gluttony's true potential, he partners with a mysterious talking sword named Greed, who warns him that Gluttony is a taboo skill that breaks the logic of the world. Now forced to live a double life, Fate must slay monsters at night to satisfy his awakened appetite for souls, lest he go berserk and lose all chances at finding happiness.

The story is set in a world where the value of Bikkuri-Man stickers are so high that they have to be transported in a cash transport vehicle. There was also the famous robbery case one year ago, called the 300 million Bikkuri-Man sticker case. One day, a high-school delivery part-timer named Yamato gets involved in a battle over stickers between two competing convenience stores. The Angel Mart owned by the Phoenix store manager is famous for its easy-to-use glitter stickers. The Devil Store across the street also tries to attract Bikkuri-Man fans to their store. Former comrades are divided into allies and foes, and the battle of destiny begins. (Source: ANN)

An arrogant scientist awakens in the middle of a muddy pigpen, and the last thing he remembers is eating a raw pig liver and collapsing in the subway. He quickly gathers that he has turned into a pig and is now in a strange fantasy land. As he struggles to grasp reality, a young girl named Jess comes to his aid. Jess happens to be a Yesma—a discriminated class of servants distinguished by their telepathic abilities and the silver collars around their necks. Despite his inappropriate thoughts about her, Jess makes sacrifices for his sake, and the pig resolves to repay her the best he can within the limits of his new body. But Jess' generosity does not absolve her from the prejudice the Yesmas face daily, and the pig begins to suspect that Jess is in greater danger than she thinks. While he wants to visit the royal capital and beg the king to change him back into a human, the pig realizes that he cannot simply turn his back on his kind savior.

An extraordinary guard walks in the desert of the western regions escaping the slaughter by the government. He took a surveillance assignment bound for the Chang capital. The task was thought of as something simple, but in reality it is a path full of crises and dangers. Here begins a journey that will affect the fate of the world.