do you know any good anime/manga about 2 different worlds?

try the anime kyo kara maoh its in a way yaoi but not that much there rnt any bad parts and its in dubded and subbed . i like it cause its funny .
its bout a boy who findes out that he is the king of the great demon kingdom .(funny part in 1st ep he gets flushed down there :P XD(tbt i diont like yaoi that much )
.
.
Kyo Kara Maoh!, takes place in an alternate world that Yuri Shibuya travels to by coming in contact with water. There are many nations in the alternate world, however, the plot centers around the The Great Demon Kingdom (眞魔国, Shin Makoku?, True Mazoku Land). The people of the kingdom are Demons (魔族, Mazoku?), but appear indistinguishable from human. Their only distinguishing traits are their long lives and the ability to use magic. The people of the Demon Tribe are able to make a pact with an element which they can then use magic of that element. Covenant Castle is in the capital of the Demon Kingdom. It is the residence of the Demon King (魔王, Maoh?, Mazoku King). The culture of The Great Demon Kingdom is very different from the Japanese culture Yuri is accustomed to, and the differences make for some amusing mishaps with long ranging consequences, such as an accidental proposal of marriage

4 more info go 2 : link

Try Ao No Exorcist!!

The story revolves around Okumura Rin, a teenager possessing abnormal strength and endurance who, along with his younger twin brother Yukio, was raised by Father Fujimoto Shiro. Soon after Yukio departs to study at the prestigious True Cross Academy, Rin learns that he is the son of Satan, the strongest of all demons. Witnessing Shiro dying to protect him, Rin ends up doing what his guardian asked him never to do: draw the demon-slaying blade Kurikara, which restrains his demonic powers, from its scabbard. From that moment on, Rin not only gains permanent demonic features like fangs, pointed ears and a tail, but also the power to ignite himself into blue flames that can destroy anything they touch.

At Shiro's funeral, Rin has an encounter with Mephisto Pheles, who agrees with Rin's wish to become an Exorcist like his guardian to take revenge on Satan. Rin enrolls at the True Cross Academy, which is actually the Japanese branch of an international organization dedicated to protect the human realm, Assiah, from demons and other creatures from the demon realm, Gehenna. Rin takes part in a special Exorcist course, the existence of which is known only by a few. Much to his surprise, he finds that his brother Yukio is already a veteran Exorcist and will be one of his teachers

Steins; Gate has multiple different "world-lines" which is basically different alternate universes... that count?

Fushigi Yugi by Yuu Watase. It's about a modern day Japanese girl who gets sucked through a book into a world resembling ancient China, but with a lot more mystical elements to it. The girl, Miaka, is told she is a special priestess, and she must collect her followers, and along the way, mystical objects. She falls in love with Tamahome, one of the followers, and he with her. Meanwhile, her former best friend from modern Japan, Yui, becomes her bitter enemy due to a misunderstanding. Some main characters die along the way, but they have an afterlife, so it's not all sad.

Yu Yu Hakusho-YuYu Hakusho follows Yusuke Urameshi, a street-brawling delinquent who, in an uncharacteristic act of altruism, is hit by a car and killed in an attempt to save a young boy by pushing him out of the way.[1][2][3] His ghost is greeted by Botan, a woman who introduces herself as the pilot of the River Styx, who ferries souls to the "Underworld" where they may be judged for the afterlife. Botan informs Yusuke that his act had caught even the Underworld by surprise and that there was not yet a place made for him in either heaven or hell. Thus Koenma, son of the Underworld's ruler King Enma, offers Yusuke a chance to return to his body through a series of tests.[1][2][3] Yusuke succeeds with the help of his friends Keiko and Kazuma Kuwabara. After returning to life, Koenma grants Yusuke the title of "Underworld Detective", charging him with investigating supernatural activity within the human world. Soon Yusuke is off on his first case, retrieving three treasures stolen from the Underworld by a gang of demons: Hiei, Kurama and Goki.[2] Yusuke collects the three treasures with the aid of his new technique, the "Rei Gun", a shot of aura energy fired mentally from his index finger.[1][3] He then travels to the mountains in search of the aged, female martial artist Genkai. Together with his rival Kazuma Kuwabara, Yusuke fights through a tournament organized by Genkai to find her successor. Yusuke uses the competition as a cover to search for Rando, a demon who steals the techniques of martial arts masters and kills them.[2] Yusuke defeats Rando in the final round of the tournament and trains with Genkai for several months, gaining more mastery over his aura.[1] Yusuke is then sent to Maze Castle in the Underworld where Kuwabara and the newly reformed Kurama and Hiei assist him in defeating the Four Beasts, a quartet of demons attempting to blackmail Koenma into removing the barrier keeping them out of the human world...

inuyasha kagome travelde from modern era to the feudal era through the well

Nobody's put Tsubasa Resevoir Chronicles? It has several worlds! Basically, this girl named Sakura loses her heart and feathers that represent shards of her heart get scattered throughout different worlds. Her childhood friend, Syaoran, and a couple of people from other words go out through the worlds to find the pieces of her heart.

Tsubasa Reservoir Chronicles!
It has lots of worlds
A group Travels among all these worlds trying to find the memory fragments of a princess called Sakura. There is a subtle romance b/w Sakura and her child hood friend Syaoran too. A pure anime series!!!

Bleach! So good!!!

Persona 4 .... Epic~!! It has 2 different worlds ... one is in a T.V =D It's awesoeme ... There is a manga and recently they r submitting the anime ^.♥

kamichama karin
blood plus
hell girl
gakuen alice
black butler
corpse princess
rosario vampire
save me lollipop
code geass
elfen lied
chrome shelled
baka and test
yu yu hakusho
d-gray man
full metal alchemist
soul eater
chobits
nabari no ou