No, it is completely inappropriate. Harry Potter is a well - known and beloved series aimed at a wide range of audiences, including children and young adults. Writing such explicit and out - of - character scenarios goes against the spirit of the original work and is also unethical.
Maybe they live together as part of a witness protection - like situation in the wizarding world. Some powerful and dangerous wizard is after them, so they have to stay together in a hidden, magically protected house. They learn to live with each other's quirks, like Harry's impulsive heroics and Hermione's strict study schedules, and in the process, they strengthen their friendship even more.
Hermione would likely have a study area with a large desk, neatly arranged with parchment, quills, and ink. Harry might have his own little nook near a window where he can keep his Invisibility Cloak and his father's old things. Their bedrooms could be separate, but decorated according to their personalities. Hermione's with soft colors and lots of candles for reading, and Harry's with posters of his favorite Quidditch teams.
Another scenario might be that they host a big wizarding party at their place. They invite all their friends from Hogwarts, and there are all sorts of magical entertainment, like a band of singing house - elves and a potion - making competition. But they also have to deal with some unruly guests and keep the party from getting out of hand.
One major problem is that it violates the nature of their relationship in the original 'Harry Potter' series. Their relationship is based on friendship and mutual respect, not any kind of inappropriate or sexual undertones. This kind of fanfiction can be seen as disrespectful to the original work and its fans who cherish the pure relationship between the characters.
There are fanfictions that might explore different scenarios between Harry and Hermione, but the idea of them showering together is often not in line with the original spirit of the 'Harry Potter' series and can be seen as inappropriate by many. However, in the vast realm of fanfiction, there may be some out - there interpretations that try to handle it in a more platonic or comical way, but it's still a rather rare and controversial concept.
Well, the main characters are clearly Harry and Daphne. Harry Potter, the famous boy - who - lived, known for his adventures in fighting Voldemort. Daphne Greengrass, a character from Slytherin. In this fanfiction, their living together creates a whole new dynamic as they interact on a daily basis.
Well, perhaps they could be forced to live together due to some magical situation. Maybe a spell gone wrong that binds them to the same living space. This would lead to them getting to know each other's quirks and gradually becoming friends or more.
The development of the characters can be quite complex. Harry, who is used to having friends like Ron and Hermione, has to adjust to living with someone who was once his enemy. He starts to question his own beliefs about Draco. Draco, too, has to change. Living with Harry makes him confront his own snobbishness. They both might start to pick up on each other's good habits. For instance, Harry could learn some of Draco's organization skills, and Draco could learn Harry's courage in a more personal way, which helps them grow as characters.
One interesting plotline could be them learning to get along despite their past rivalries. For example, they might start to understand each other's insecurities and fears. Another could be them teaming up against a common threat in the wizarding world while living together, which forces them to trust each other. And there could also be a plotline where they discover new magical things together in their shared living space.