They might go on adventures like exploring the Forbidden Forest. Since Harry is Doms' younger brother in this fanfiction, they could be sneaking around the forest looking for magical creatures that are rumored to live there.
Well, in many fanfictions, they would probably have adventures at Hogwarts. Maybe they team up to solve a mystery within the school walls. It could be related to a hidden chamber or a strange magical object that's causing problems. They'd use their combined knowledge of magic and the school's secrets to figure things out.
At first, they might have the typical sibling rivalry. Doms could be a bit overprotective as the older brother, which Harry might find annoying. But as they face challenges together, like dealing with school bullies or difficult exams, their relationship deepens and they become closer friends as well as brothers.
In this fanfiction, they may go on an adventure to rescue other magical creatures. The thunderbird's connection to nature could guide Harry to places where these creatures are in trouble. For example, if there are unicorns being hunted by dark forces, the thunderbird and Harry could work together. The thunderbird could fly above to scout the area while Harry uses his magic skills on the ground to fight off the hunters.
Well, they might go on adventures in the Forbidden Forest. The snake could use its unique abilities to sense danger and hidden paths. For example, it could lead Harry to discover some long - lost magic artifacts or secret chambers that are not known to most wizards. They could also encounter some magical creatures together and the snake could help Harry communicate with them in some special way.
They could embark on an adventure to rescue a group of people who were kidnapped by a dark wizard - scientist hybrid. Harry would use his spells to fight off the magical aspects of the enemy, while Tony would use his Iron Man suit to deal with the technological threats. During this adventure, they would also learn more about each other's worlds and become even closer friends.
Perhaps they would go on adventures outside of Hogwarts during the holidays. The bat could fly ahead and scout for safe places for Harry to explore. They could end up at an old wizard's cottage where Harry discovers a new spell or an ancient magical artifact.
There are countless adventures they could embark on. They could travel to outer space together, with Superman guiding Harry through the vastness of the cosmos. Harry could use his magic to protect them from any strange magical phenomena they might encounter out there. Or they could go on a quest to find a lost artifact that has the power to both enhance magic and Kryptonian powers. Along the way, they would face many challenges. They might have to deal with other superheroes or wizards who are jealous of their combined powers. They would also have to learn to trust each other completely, as their different powers and ways of thinking could sometimes lead to misunderstandings. But through these adventures, their bond as brothers would grow stronger.
Maybe they embark on a journey to rescue a captured wizard or witch. They use their different strengths - Hermione's strategic thinking and her brother's charm or ability to make quick friends in the wizarding world - to plan and execute the rescue mission.
Well, they might go on adventures exploring ancient tombs. Harry could learn a great deal from Lara about deciphering ancient symbols and surviving in dangerous environments. Maybe they would travel to places like the jungles of South America in search of lost artifacts.
They could go on adventures to stop powerful demons that threaten the balance of the DxD world. Naruto's combat skills and Rias' leadership would make them a formidable team. They might also travel to different dimensions in search of rare items or knowledge. For instance, they could explore a dimension where there are unique forms of magic that Naruto could learn to combine with his chakra.
Well, they might go on a journey to find a hidden magical artifact. Maybe they encounter some dark wizards along the way and have to use Buckbeak's flying skills and Harry's magic to escape.