Spontaneous Human Combustion: a chaotic phenomenon that has plagued humanity for years, randomly transforming ordinary people into flaming, violent creatures known as Infernals. While Infernals make up the first-generation accounts of Human Combustion, the second and third generations became known as pyrokinetics—people gifted with the ability to manipulate and control their flames while remaining human. To combat the Infernal threat and discover the cause, the Tokyo Armed Forces, Fire Defense Agency, and Holy Church of Sol produced their answer: the Special Fire Force. Young and eager third-generation pyrokinetic Shinra Kusakabe, nicknamed Devil's Footprints for his explosive ability to ignite his feet at will, becomes a member of the lively Special Fire Force Company 8. Upholding the brigade's duty to extinguish the blazing Infernals and lay their souls to rest, Shinra is determined to become a hero who will save the lives of those threatened by the flame terror. However, this is not the hero's game Shinra imagined. The Fire Force is a fractured mess of feuding brigades, abnormal Infernal sightings are increasing all over Tokyo, and a shadowy group is claiming to have answers to the strange fire that caused the death of Shinra's family 12 years ago. Faced with many obstacles within and outside the Fire Force, Shinra fights to uncover the truth behind the burning mysteries that have kept him in the dark. [Written by MAL Rewrite]

After his confrontation in the Nether with his younger brother Shou, Shinra Kusakabe's resolve to become a hero that saves lives from the flame terror strengthens. Finding a way to turn the Infernals back into people, unraveling the mystery of the Evangelist and Adolla Burst, and saving his mother and Shou—these are the goals Shinra has in mind. However, he has come to realize that attaining these goals will not be easy, especially with the imminent danger the Evangelist poses. The Evangelist's plan is clear: to gather the eight pillars—the individuals who possess Adolla Burst—and sacrifice them to recreate the Great Cataclysm from 250 years ago. Having been revealed by the First Pillar that the birth of a new pillar is approaching, Shinra is determined to protect his fellow pillars from the Evangelist. Thus, the fiery battle between the Special Fire Force and the Evangelist ignites. Together with the Special Fire Force, Shinra's fight continues as he uncovers the truth about the Great Cataclysm and the nature of Adolla Bursts, as well as the mysteries behind human combustion. [Written by MAL Rewrite]

The story takes place on an island, where a "Fractale System" is beginning to collapse. One day, Clain finds an injured girl called Phryne under a cliff. She disappears leaving a pendant. Clain sets out for a journey with the girl-shaped avatar Nessa to look for Phryne and discovers the secret of the Fractale System.

Tooru Honda has always been fascinated by the story of the Chinese Zodiac that her beloved mother told her as a child. However, a sudden family tragedy changes her life, and subsequent circumstances leave her all alone. Tooru is now forced to live in a tent, but little does she know that her temporary home resides on the private property of the esteemed Souma family. Stumbling upon their home one day, she encounters Shigure, an older Souma cousin, and Yuki, the "prince" of her school. Tooru explains that she lives nearby, but the Soumas eventually discover her well-kept secret of being homeless when they see her walking back to her tent one night. Things start to look up for Tooru as they kindly offer to take her in after hearing about her situation. But soon after, she is caught up in a fight between Yuki and his hot-tempered cousin, Kyou. While trying to stop them, she learns that the Souma family has a well-kept secret of their own: whenever they are hugged by a member of the opposite sex, they transform into the animals of the Chinese Zodiac. With this new revelation, Tooru will find that living with the Soumas is an unexpected adventure filled with laughter and romance. [Written by MAL Rewrite]