It could be that they are simply having a study session together. But during this time, they start to have deep conversations about their futures, their families, and their feelings towards the ongoing war. They might find comfort in each other's company while surrounded by the books in the library.
Maybe they are in the library looking for information about a mysterious new student. They suspect this student has a connection to a powerful magical artifact that could change the balance of power in the wizarding world. As they search, they face various obstacles like restricted sections and helpful, but nosy, librarians.
One possible plotline could be that they are researching a very difficult and dangerous dark magic that is starting to surface in Hogwarts. They are in the library trying to find clues in old books to stop it before it causes harm. They might discover a hidden prophecy related to it.
One possible plotline could be that they leave to escape the chaos in the wizarding world of Britain. Maybe they are seeking a fresh start in America where they can explore new magical cultures. For example, they could be interested in learning about the different types of magic practiced by American wizards and witches, like the use of wands that are made from different materials compared to those in Britain.
One possible plotline could be that Harry and Hermione are at a Christmas party at Hogwarts. They find themselves under the mistletoe, and at first, they're both a bit flustered. Hermione might blush and stutter, while Harry is also a bit taken aback. But then, they share a sweet, innocent kiss that makes them realize their feelings for each other are deeper than just friendship. However, they're worried about how Ron would react, so they keep it a secret for a while.
One possible plotline could be that after the war, Harry has some sort of emotional trauma and Hermione, being like a mother figure to him, takes him under her wing more than ever. So, he starts to subconsciously call her mom as he feels a deep connection and a sense of family with her.
Maybe they are celebrating a victory, like the defeat of a dark wizard. They are so overjoyed that they hug and then it turns into a cuddle. This shows the closeness of their relationship and how they share their emotions, both good and bad. It also emphasizes their friendship and the trust they have in each other.
One possible plotline could be that Harry and Hermione initially go to the Yule Ball as friends but end up realizing their deeper feelings for each other during the course of the evening. Maybe they share a special dance that makes them see each other in a new light. Another could be that they face some sort of jealousy from other students which causes them to become closer as they deal with it together.
One possible plotline could be that Hermione, being the intelligent and curious witch she is, stumbles upon the legend of Lucifer in the Muggle world. She becomes intrigued by the concept of such a powerful and complex figure. Maybe she starts researching more about Lucifer's nature and motives, and this new knowledge somehow influences her magic or her relationships at Hogwarts. For example, she might start to question the nature of good and evil in the wizarding world in a new light, similar to how Lucifer is often a symbol of rebellion against the status quo in his own lore.
One possible plotline could be that Hermione discovers a passion for a particular type of dance, like ballet. She might start taking secret lessons and face challenges from her friends who don't understand her newfound love. As she progresses in her dancing skills, she could enter a local competition and use her intelligence to choreograph a unique routine, impressing everyone and showing that she can excel in something other than academics.
One possible plotline could be how Harry and Hermione adjust to their new roles as parents. They might face challenges like Teddy having magical outbursts due to his young and powerful magic. For example, Teddy could accidentally transform objects in the house when he gets excited or scared. Another aspect could be Teddy's education. Harry and Hermione would surely want to give him the best magical education, so they might start teaching him basic spells at a very young age. They could also introduce him to the wizarding world's history and culture, taking him to places like the Ministry of Magic to show him how things work.
A possible plotline might involve a magical experiment. Harry, being the curious wizard he is, participates in an experiment that has unforeseen consequences on the fabric of time and family relations. As a result, he becomes Hermione's father. The story could then follow how Hermione discovers this truth and how it affects her relationship with Harry. It could also explore how their friends like Ron react to this strange new family dynamic in the wizarding community.
There could also be a plot where the baby is from another dimension or time. Harry and Hermione have to figure out how to send the baby back while also dealing with the chaos the baby's presence causes in their own time and world. They might have to team up with other characters like Ron or Dumbledore to solve this complex problem.