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Official Site: Kodansha

The Seven Deadly Sins is a manga series written and illustrated by Nakaba Suzuki, set in a fictitious in a time period superficially akin to the European Middle Ages. Likewise superficially, and frequently in ironic or contradictory ways, the series references various traditions, including Christianity (e.g., The Seven Deadly Sins, the Ten Commandments) and the Arthurian legend (e.g., in naming Meliodas, Escanor, Merlin, Diane, Gowther, King, and Ban.). The contradictory nature of the names given to the groups and characters is reflected in the emergence of the titular group as the protagonists and the group of "Holy Knights" as the antagonists of the series.

In accordance with the medieval theme, many of The Seven Deadly Sins characters are depicted as knights, broadly construed, who are clad in stylized variations of medieval armor, many of whom perform magic. The five major clans in the series are Human, Giant, Fairie, Goddess, and Demon, all of which possess powerful abilities and magical powers. In naming the characters, the manga offers a wide variety of further mythical, historical, geographical, and cultural allusions, e.g., King Arthur, Merlin, Gowther, Zaratras (Zoroaster), Dreyfus, Gustaf, Frisia, Jericho, Galand, Derierrie, Albion, The Vampires, and Zhivago.

The series' male main protagonist and leader of the Seven Deadly Sins, who bears the sin of wrath as a Dragon symbol on his left shoulder. Despite being called the Sin of Wrath, displaying it whenever those dear to him are endangered or killed, Meliodas conceals his rage under the façade of a mellow trickster who is often seen fondling Elizabeth one way or another. When found by Elizabeth at the start of the series, who seeks his help in reuniting the Deadly Sins after their disbandment ten years prior, Meliodas reveals to be doing the same thing. Despite his adolescent appearance, Meliodas is actually a Demon who is over three thousand years old. Meliodas is later revealed to be the son of the Demon King and original leader of the Ten Commandants, possessing the fragment of his father's soul embodying Love. But Meliodas turned his back on his people when he fell in love with the Goddess Elizabeth, killing two of his fellow Commandments and causing the Holy War to occur. The Demon King allowed the Supreme Deity of the Goddess race to curse Meliodas with immortality, with the Demon King cursing Elizabeth with perpetual death and reincarnation to make his son suffer every time he is reunited with her. Due to the curse's nature, Meliodas' soul ends up in Purgatory with the Demon King feasting on his emotions before reviving him, gradually reverting to his former self as a result.

After Elizabeth begins regaining her memories as the goddess Elizabeth, Meliodas resolves to become the new demon king to break their curses. He disbands the Deadly Sins and enters an alliance with Zeldris after promising to use his status to release his brother's love Gelda, revealing to have absorbed the Commandment of Pacifism and intending to absorb the other commandments. Despite becoming a vessel for the Demon King before managing to force him out of his body, Meliodas freed him and Elizabeth from their curses though he would leave the living world because his power as a demon king. But the victory is short-lived as the Demon King possesses Zeldris and restores Elizabeth's curse, prompting the Sins' final battle with the Demon King. After killing his father, Meliodas sacrifices his demon king powers to completely destroy the commandments to prevent the Demon King from reviving.

Diane (Seven Deadly Sins) has not been a contender in any CBUB matches.