Rhiannon is the fair and gentle daughter of a village chief. Unfortunately for her, she's also exactly the sort of maiden who is needed as a sacrifice to wake the Demon King Arawn from his thousand-year slumber and is soon kidnapped for this very purpose. However, when Arawn is summoned, he decides to spare Rhiannon's life, instead killing her captor and freeing her from mind control. Taken with his kindness, Rhiannon immediately decides to marry the Demon King, making him the new village chief. All of this is bad news for Rhiannon's protective but hot-headed brother Arthur, who must now pledge his knightly service to his new Lord, Arawn. Together the three of them must journey and together they must fight, encountering new friends and new foes along the way.
Although the setting is different these action harems are pretty similar. They are a mix of a more serious plot with plenty of action, and episodes of pure harem with groups of girls all falling madly in love with the lead male. If you enjoyed one, you'd probably enjoy the other.
After many trials, the Hero has reached his destination: the throne room of the Demon King, where he hopes to end the war between the Demon and Human realms once and for all. What he finds, however, is not at all what he expected: the 'king' of the Demons is a woman, and a bouncy one at that - what's more, rather than fighting, she wishes to engage him in dialogue! She explains that he was never expected to succeed in his mission, because the war is perpetuated by parties in the human world who profit from it every day. Swayed by her arguments, he makes a pact with her to work toward peace for both their worlds. Together, they will better the lives of their people and create a world where war is no longer needed to ensure prosperity - despite those who would shed blood to keep the status quo.
Both feature Demon Kings, but these are not your run of the mill Demon Kings, no no. Maoyuu and Tears to Tiara set out to redefine the term Demon King, by turning the would be villian into a good guy. So if you enjoyed the unconventional theme of the demon king in one, you might like the other one as well.
All Renji Hiiragi wants to do is to go to school and life a normal life. However, because he is a wizard, he is forced by the elegant yet abusive protector of Earth, Anzelotte, into using his powers to fight against supernatural invaders called Emulators! Renji, along with his childhood friend Kureha and the serious Akari, are tasked with protecting Elis Shiho, who has been chosen to collect seven mystical jewels in order to protect the world against an imminent Emulator invasion. In the meantime, enemies act from the shadows in an effort to prevent them from succeeding. Can they strengthen themselves as a group enough to overcome the obstacles before them, so Renji can finally get back to his studies?
As the island of Lodoss braces against a new assault by the Marmo and their new allies, the fate of the land falls into the hands of Spark, an inexperienced young knight. As aging legends Ashram, Kashew, Parn and Deedlit begin to fade, a new generation of heroes will have to arise to keep Lodoss from being torn apart by conflict.
In the revolutionary Meiji period, Japan is undergoing enormous political change. It is a time when vagabonds and terrorists will use any method to prevent the modernization of their country, even if it means trampling on the innocent in the process. In such a time, Himura Kenshin, a wandering samurai, has dedicated his life to protecting the weak and desperate peasants from those who would oppress them. However, Kenshin has a dark past which threatens to destroy the values he is fighting for. When he meets his new friends Kaoru, Sanosuke, and Yahiko, and tries to build a peaceful life with them, events conspire against him. Can Kenshin overcome the demons within and without, and finally ensure the peaceful future that Japan deserves?
At first the two movies might not look like they have much in common, since their stories and genres seem quite different, but they do.
First of all the main character is in both the nearly unbeatable type, that has to fight enemies of his past and live with old sins. One is called Hitokiri (killer) and the other one Mao (demon king).
Moreover they both have plenty of sword fighting and action.
Finally they are both about creating a better world for those you love. Both main characters try to protect the weak and fight against the idea of the weaker being unworthy of living.
All in all I think these two Animes have a very similar feeling to them