Nakajima Youko is an average high school student. Her red hair is not common in Japan, causing her nothing but trouble. One day, a mysterious man named Keiki appears before her claiming she is an empress. A few minutes later, she and her friends are attacked by a demon and pulled through a vortex into a new world. They find themselves alone in a world of demons and magic, and they must fight to survive.

Both anime revolve around “common” students who suddenly find themselves dumped into a different world. The plots are really similar: a boy/girl being transported to another world, becoming a king/empress, and having to face the troubles about it. Also, both characters discover that the other world is actually their real home and they must get use to the sometimes strange and bizarre customs.

During their visit to the National Library, Miaka Yuuki and her friend Yui Hongo are transported into the strange world of the book, “The Universe of The Four Gods”. The life of these two friends suddenly changes when Miaka is revered as the Priestess of Suzaku, while Yui become the Priestess of Seiryuu, the enemy nation. Miaka must now find her army of celestial warriors in order to summon the god Suzaku, who will concede three wishes.

Both Miaka and Yuri are pushed into another world, where they must play an important role for the sake of the country: a high Priestess and a Demon King. From here, we can follow the journey of the main character into adulthood, learning the rules of a new world. Also, we can’t ignore the army of bishonen to ogle at.

Haruhi Fujioka is a bright and talented student of Ouran High School, an academy for elite students. Looking for a quiet place to study, she accidentally finds the Host Club. Led by “The King” Tamaki, and with the most beautiful boys as members, the club goal is to entertain the girls in the academy. Trying to get away from the boys, Haruhi drops a very expensive vase (8,000,000 yen). Then, she is forced to work for them to repay her debt, because all of them think that she is actually a guy. Surprisingly, they’ll discover that she is a natural born host.

Although the story seems to be different from Kyou Kara Maou!, the feeling when you watch it is the same: in both there is a funny gender misunderstanding. Here, all of the Host Club members feel somehow attracted to Haruhi, and she is quite popular among the girls too, while in Kyou Kara Maou!, Yuri ends up engaged with Wolfram. Both of these anime flirt with the Shounen Ai genre.

Teito Klein is a former slave, and one of the most promising students of the Barsburg Empire's Military Academy. He can’t remember his past, but he is extremely good using the Zaiphon ability. Except for his friend Mikage, nobody seems to really trust him. Memories come as dreams, and one night he remembers who killed his father. After a failed attempt to kill that person, a high-ranking official, Teito must run away from the academy. Now, he’ll be chased by the Military and also by evil beings known as Kor, and the legendary Seven Ghosts will protect him.

Teito and Yuri have a big similarity, though they have special powers (they’re the powerful ones indeed), they’re surrounded by a bunch of hot bishonen who want to protect them. In both anime, most of the jokes and the humor points are built around the boy’s love, which is implied but never shown.

The Hero of this story, named Yuusha (which actually means Hero) has finally found the Demon King’s Castle after a long quest. Once there, he finds out that the king, is actually a queen, the Dark Lady who rather than fighting prefers giving an explanation of why the war between humans and demons is necessary for the increase of population and economy’s development. He will never succeed in his mission of ending the war, because the world profits from it. They make a pact to work together for creating a new world where war is no longer needed.

The background of these two anime is very similar: both are set in a fantasy realm in feudal time. Both series are focused in a Maou who is not evil at all. In fact, they are kind hearted and their goal is to end war and conflict and reigning in peace. Both anime start with a sort of engagement of the main couple. Yuri propose to Wolfram, and Yuusha makes a contract with the Dark Lady.

You are in the mood for a hamburger, so you go to a fast-food restaurant. What would you do if the person behind the bar is the Devil himself? Satan and his loyal general Alsiel, were defeated by Hero Emilia. When trying to escape, they go through a portal and end up in modern Tokyo. But there, they no longer have magic powers. They must learn to live like common humans, and that means finding a job and a place to live. Satan starts working at MgRonald, while planning how to rule over the country in the process.

These anime are the opposite of each other, but at the same time similar. Hataraku Maou-Sama! is a mirror of Kyou Kara Maou!. Yuri must get used to live like the Demon King, whereas Satan must adapt to live like a normal human. The main character is a stranger in a strange land. Yuri used to live as an ordinary japanese and now he’ll live in a fantasy land. On the other hand, Satan comes from a fantasy land, and now he’ll live in Tokyo. Also, the potential love interest of these characters should see the true nature of the Maou.