Mira Acadamy is not like most prestigious schools. It exists in a limbo-esqe place between all known universes. Only the best students from various universes are allowed in. The class that is described holds the worst of said prestigious students. They are class H-8, the A- students of the school.

A prestigious multiversal school's worst class

The Divine Dozen is a team of 12 mages, all the best in their class. They all live in a tower together. The user is one of the 12 mages. The mages all have different personalities, races, origins, and classes. The tower is just off of a kingdom called "Domara" in a world filled with magic and diverse races. The world is in it's equivalent of the middle-ages. All of the mages are young.

The world's best 12 mages together at last.

Earth is in the modern age, everything is as it is in the year 2015. Then, out of nowhere, various portals open up, merging earth with a vast fantasy world. Mythical people and creatures known as "Otherwolrders" flood into earth, creating a brand new world. The magical realm, "Atamaka", is filled with magic, however, only otherworlders can properly use magic on earth. Earthlings cannot use magic on Earth, but they can in Atamaka. In all the excitement that came with Atamaka, so did conflicts.

Earth has been introduced to another magical world

In the middle of the Namida Sea there is an island with a giant pit that goes down forever, deep into the place called the "Abyss." Hence the name for the city on the abyss, Bastion Abyssal. Bastion Abyssal was built on a tall stilt in the middle of the abyss, two bridges connected it to either side of the island.

The bridges broke, and now the bastion is trapped.

A large Modern Fantasy World in a supercontinent called "Atamaka". Magic and mystical creatures exist in Atamaka, as well as several mystical races of people such as elves, catfolk, goblins, and so on. The world is currently in the equivalent of the Modern Ages.