Percy Jackson and Annabeth Chase have survived countless monsters, gods, Titans, and finally their most difficult opponent of all--high school, though not without their fair share of mishaps and unexplained absences. All they want to do now is enjoy their summer before tackling their next adventure; college. After a series of strange encounters, however, they realize that this summer is going to be just as eventful as the rest. Meanwhile, Earth's Mightiest Heroes are fractured. Tony Stark and Steve Rogers haven't spoken in months, and even with new members, the team is suffering. They know that something is coming, but the question is; will they reconcile in time to thwart it? With the appearance of old friends, new enemies, and peculiar allies, the Avengers are forced to accept that the world is even bigger than they thought. A/N: Important information such as the timeline and other details provided in the beginning author's note.

So the hetalia gang were told by their bosses to observe high school students at their schools to see if their education is superior as "exchange students". The nations finally decide to go to one of Japan's finest school, Ouran High school. The nations soon encounter strange students who are apart of the Host Club? With the nation's slip ups with their names, the host club begins to get suspicious and tries to figure out their identities with no such luck. Yet Kyoya does not intend to give up just yet and continues to pry into the governments files but always fails. The nations soon encounter an obstacle that can get many people killed. A quite large group of robbers infiltrates the school with deadly weapons. But the nations will not lets them harm the innocent people in the school. What will be in store for these childish group of nations?

The Magic Trio come together to practice some magic spells in England's basement. But when a spell goes wrong Hungary, Denmark, and America get teleported to England's basement with a clearly visible change. They were children! But not just any kind of children, the spell somehow enhanced the magic in them. Now they had to be enrolled into Hogwarts until the Magic Trio could figure out how to change them back. But to keep a close eye on them to make sure they don't get into trouble, the magic trio becomes the new security guards of the school. The Golden trio become suspicious of these new comers along with Draco and want to find out what they're hiding.