Akuto, the main source of energy is running low and the Heavens, a world of islands, hidden beyond time, floating above ours, has united against the Magical Kingdom whom uses the most energy. To save both the Magical Kingdom and the Heavens and restore the flow of akuto, the Magical King Munto must follow a vision and find the girl Yumemi in the lower world. Yumemi herself is just a normal girl except that she is the only one who can see the islands of the Heavens floating above. When Munto appears before her she starts thinking about hers and others responsibility to the world.

Two years have passed since the catastrophic event known as the "Continent's Dropping" from the first OVA episode. Yumemi still has not forgotten her ability to see the world above, but now she's in the last years of middle school, tests and real life take over. Unknown to the people of the world, Akuto the world still thrives, but the war rages on. In need of help, Gaz, sends Munto down into Earth once more to find the "Girl of Destiny" in order to save Heaven from its ultimately demise. Yumemi must once confront the only world she sees, and not even her friends Ichiko and Suzune can help her.

To save both the Magical Kingdom and the Heavens and restore the flow of akuto, the flow of energy of everything, the Magical King Munto must follow a vision and find the girl Yumemi in the normal world. Yumemi herself is just a normal girl except that she is the only one who can see the islands of the Heavens floating above. When Munto appears before her she starts thinking about hers and others responsibility to the world.

Two years have passed since the catastrophic event known as the "Continent's Dropping" from the first OVA episode. Yumemi still has not forgotten her ability to see the world above, but now she's in the last years of middle school, tests and real life take over. Unknown to the people of the world, Akuto the world still thrives, but the war rages on. In need of help, Gaz, sends Munto down to Earth once more to find the "Girl of Destiny" in order to save Heaven from its untimely demise. Yumemi must once again confront the world only she sees, and not even her friends Ichiko and Suzune can help her.

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In the land of Foreland a coup d’état has occurred and the princess, after witnessing the death of the King, is on the run. She meets with battle-hungry bounty hunter Falis, and with a twist of fate they both switch souls, making Alita the maid of the now princess Falis. Named for her bravery in confronting the enemy as ‘Murder Princess’, Falis must continue to be the princess as well as confronting any new opponent that comes to her way.

In the kingdom of Forland, a coup d'etat occurs which leads to the death of the King. In the last moments of his life, the King sends his only child, Princess Alita Forland to escape. Unfortunately, while fleeing, a life and death situation between Alita and the bloodthirsty bounty hunter Falis causes the two of them to switch bodies. Desperate for the safety of her Kingdom, Alita begs Falis to return and protect the Kingdom, offering herself as collateral. After a swift beating on the rebel forces, Falis resumes the title of Princess of Forland, leading to the birth of the most savage princess in their land, the "Murder Princess".

Seton Academy, a school full of animals where, thanks to population decline, there are fewer humans than any other creature. Mazama Jin, an animal hater and the only human male in his class, falls in love with Hino Hitomi, the only female human, the moment he lays eyes her. However he soon finds himself entangled with various other creatures after he reluctantly joins the 'pack' of Lanka the wolf, the only other member of her pack.

Unaired short episode included with the third volume of the Seton Academy Blu-ray release.

In the near future, spirits and monsters are in full sight. A boy leads a group of people with special abilities as they plot against a massive organization that takes advantage of a certain incident and eventually know the truth about their world in the process.

Phantoms: supernatural entities such as ghosts or youkai that, until recently, were thought to be superstition. However, when a virus that infects the brain spreads throughout society, people's perception of the world changes as the mythical beings are revealed to have been living alongside humanity the entire time. This virus has also affected those of the next generation significantly, allowing them to develop special abilities that they can use to fight against dangerous phantoms. Haruhiko Ichijou and Mai Kawakami are two of those that were granted such power as Haruhiko wields the ability to summon and seal phantoms through drawings while Mai imbues the power of the elements into martial arts. Together, along with the friendly phantom Ruru, they form Team E of Hosea Academy which is dedicated to dealing with these often mischievous beings. In a world where the real and surreal intertwine, Musaigen no Phantom World follows the adventures of a group of friends as they handle the everyday troubles caused by phantoms.

A special unaired episode of Musaigen no Phantom World bundled with the series' seventh DVD/BD.