Demon King Ahriman has a problem: his daughter, Dou, loves everyone! Consequently, Ahriman had to halt his invasion of the world in the worry that his daughter's behavior is not one befitting someone of her kind. She loves making friends, helping others, and bringing happiness to all creatures including their enemies, the humans. Ahriman, however, congratulates Dou for her good deeds instead of scolding her. With the help of his aide Jahy, who is assigned as Dou's master, the two try to get rid of her kindhearted nature—so that the Demon King's daughter goes from a cute, adorable, and nice little girl to an inhuman, cruel, and twisted little demon.

The fire extinguishing samurai who stopped the great fire was called "The fire-eating bird". Matsunaga Gengo, once known as the "Fire-eating Bird", was the best fire-fighting samurai in Edo. He had resigned from the fire brigade for a reason but suddenly received an invitation to serve in the Shinjo clan. The Shinjo clan's fire-fighting team had no money and no personnel and was looked down upon by those around them. With the encouragement of his wife, Miyuki, Gengo decides to rebuild the collapsed fire-fighting clan as its chairman. Gengo and his friends, all of whom have their own peculiarities, struggle to "save any life", despite being ridiculed as "ragged steeplejacks"(= the 'Boro-Tobi-Gumi'.), In Edo, a mysterious series of suspicious fires called "foxfires" continue.

Alba is reborn as the son of a poor nobleman. He is unable to use magic due to a disease and is destined to have a short life, so he is taken in by the duke's family. There, he meets Orsis, who was his favorite person in a previous life. While this coincidence seems to good to be true, he remembers that he is why his beloved lost his smile, and begins to search for a way to live a long life so that he can continue to love him.

Sequel to . Thousands of years ago, the evil emperor Talpa attempted to conquer the Earth. Defeated, he was banished to the Nether Realm and his armor was divided into 9 separate suits. Now, he has returned to conquer Earth, having reclaimed 4 of the suits. The other 5 are in the possesion of those who are the only hope of stopping him: The Ronin Warriors.