Their relationship might evolve in a way where they complement each other perfectly. Growing up together would mean understanding each other's quirks and strengths, and they'd likely be an unbeatable team in facing challenges.
It's possible that their relationship turns out to be one of both friendship and a sort of sibling-like love. They'd support each other through thick and thin, with a connection that's unbreakable.
It could become very close and trusting. They'd know each other inside out and have a deep bond from childhood.
At first, it might be a bit of a rocky start. Harry, having grown up without a proper family, could be wary of Regulus. But as time passes, he starts to see Regulus as a father figure. Regulus, on the other hand, is determined to make up for his past mistakes by raising Harry right. So he showers Harry with care and magical knowledge, and they gradually form a strong bond.
In this fanfiction, Harry's development could be centered around his understanding of family. Growing up with a scorpion, he has a very different concept of what a family is. This could lead to him having a complex relationship with the Weasleys or other surrogate families in the wizarding world. He might be hesitant to accept their love and care at first, but gradually come to realize the value of a real family. Also, his magical development could be more instinctive, like how a scorpion reacts instinctively to threats, Harry might use magic in a more impulsive yet effective way when in danger.
Harry would likely develop a very different personality. He may be more solemn and less prone to the typical teenage angst that the original Harry had. Since he is raised by Death, he might be more in tune with the darker aspects of life and magic from a young age.
In many of these fanfictions, their relationship often becomes more intense and reliant. For example, in stories where they are facing the mystery of Riddle together, they learn to trust each other even more deeply. They might start to rely on each other's unique skills, like Harry's courage and Hermione's intelligence, in a more profound way.
They might start as friends who support each other through their magical studies. As they get older, they could develop romantic feelings. Their different backgrounds, Harry being a pure - blood wizard with a tragic past and Fleur being part Veela, would add depth to their relationship.
The relationship develops gradually. Cloud, being from a different world, has to adapt to the wizarding world to raise Harry. Initially, he may be a bit distant, but as he witnesses Harry's struggles against the forces of the Dark Arts, he becomes more involved. He starts to share his own experiences of fighting against powerful enemies in his world with Harry. This sharing creates a deeper connection between them. Harry begins to look up to Cloud not just as a protector but also as a source of wisdom. And Cloud starts to care deeply for Harry, seeing in him a chance to do something good in this new and strange world he has found himself in.
In such fanfictions, their relationship often develops with Hermione taking on a more protective and guiding role. Since Harry can't hear, Hermione becomes his main source of information about the world around him at times. For example, in the classroom, she might be the one to quickly write down important instructions for him.
It develops in a complex way. There's a lot of mutual understanding and support growing between them.
Their relationship often develops into a deeper, more trusting bond. Hermione's act of saving Harry makes him see her in a new light. He becomes more reliant on her, and she on him. For example, he may start confiding in her about his past abuse, which he never did before. This sharing of secrets brings them closer.
In this fanfiction, Harry's development would deviate a lot from the original. His sense of right and wrong would be blurred. Since he's raised by devils, he may not have the same values as the normal Harry. He could be more self - centered, focused on his own survival and power gain rather than the well - being of others. His magical abilities might also develop in a more unorthodox way. Instead of learning the traditional spells for good, he might learn spells that are more harmful or controlling.