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.
They might go on an adventure to explore an uncharted part of the wizarding world. It could be a hidden forest full of magical creatures not yet discovered. Hermione is excited about the new magical knowledge they could gain and her brother is excited about the thrill of the exploration. Along the way, they face various challenges that test their relationship and their individual skills.
In the fanfiction, they could have a very protective relationship. The brother might always be looking out for Hermione, especially in dangerous situations at Hogwarts. He could be like a secret guardian, using his own unique skills and knowledge to keep her safe.
In the fanfiction, their relationship could be one of mutual admiration. The baby brother could look up to Hermione as a role model, seeing her as a source of inspiration. And Hermione could be in awe of how quickly he picks up new things, like magic spells or concepts, and they could bond over their shared love for magic.
Well, they could be very protective of each other. Hermione, being the intelligent and strong - willed witch she is, might take it upon herself to teach her little brother all she knows about magic. And her little brother could look up to her and be her biggest supporter in Hogwarts, always cheering her on during her academic achievements and adventures.
He could be really curious. Just like Hermione is always eager to learn new spells and knowledge, he might be constantly exploring the Hogwarts grounds, looking for hidden secrets or new magical creatures.
They could go on adventures to uncover their family's past. Maybe there are some hidden magical artifacts or secrets related to their family that they need to find. They might also embark on a journey to protect their family from a new dark threat that specifically targets their family line.
They could go on adventures to discover lost magical artifacts. For instance, they might search for an ancient wand rumored to have extraordinary powers. Along the way, they would face various obstacles like traps set by long - dead wizards and magical creatures guarding the artifact.
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.
They could have an adventure where they go on a quest to find a rare dragon egg that has been lost in a dangerous and enchanted forest. Hermione's intelligence and Charlie's dragon - handling skills would be put to the test as they face various magical creatures and obstacles along the way.
Well, they could embark on an adventure that involves international intrigue. Maybe a valuable artifact has been stolen and is being smuggled across different countries. Sherlock and Hermione would use their combined skills to track it down. Sherlock would use his detective skills to follow the clues on the ground, while Hermione would use her knowledge of different languages and cultures (gleaned from her studies) to help them navigate through different countries and understand the motives behind the theft.
They could go on a quest to find a lost family heirloom. This heirloom might have special powers that could help in the fight against the dark forces. Along the way, they'd face various challenges like magical creatures and dark wizards.