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Chibi shorts for The Seven Deadly Sins published on the official Twitter account for the series.
Spencer is a typical third grade student with a not so typical ability: when he writes entries in his diary, they come true! In addition to causing his family to eat fried pencil balls for dinner, Spencer makes the ultimate mistake when he writes about a horde of flying pigs. And though he’s able to erase all of them from existence, one of them slips through the cracks and remains a reality! This pig – which Spencer dubs Sunny Pig – becomes Spencer’s companion in his everyday adventures. From trying to stop Spencer's father to cooking dinner to solving the disappearance of a local weather reporter, there’s plenty of fun times to be had in the life of this wacky family!
Each of the three Chain Chronicle: Haecceitas no Hikari films will run with a "Chen-Kuro Gakuen" (Chen-Kuro Academy) short. "Chen-Kuro" is a diminutive way of shortening Chain Chronicle in Japanese.