Minerva would be a strict but loving mother - figure. She would be very protective of Hermione and would use her wisdom to guide Hermione in her magical studies and in life. She might be a bit more relaxed in her personal interactions with Hermione compared to how she is with students at Hogwarts.
The main characters are clearly Minerva McGonagall and Hermione Granger. Minerva is the one who adopts Hermione, so she plays a crucial role in providing a new life and support for Hermione. Hermione is the character who is being abused and then rescued by Minerva.
One interesting plot could be how Hermione adjusts to her new family life with Minerva and Albus. Maybe she starts to learn different magical skills from them in a more personalized way compared to at Hogwarts.
The main characters are obviously Albus and Minerva. Albus Dumbledore is often portrayed as a wise and powerful wizard, and Minerva McGonagall is known for her strict yet fair nature. In the fanfiction with a baby involved, they are likely to be the caregivers or parents of the baby, so the baby would also be a significant character, though perhaps more of a focal point for their actions and decisions.
Harry is likely to be his usual self - brave, kind - but also a bit more nurturing as he's adopting Sasuke. He would be patient in dealing with Sasuke's often cold and aloof exterior. Sasuke, on the other hand, would be his brooding self at first. He's full of vengeance in his original story, but in this fanfiction, he might start to let go of some of that as he experiences Harry's care and the new world of magic.
Harry would likely be very determined and compassionate. He has seen the destruction Voldemort caused, and so he is determined to prevent Tom from going down that path. His compassion comes from his own difficult upbringing and he wants to give Tom a better chance. Tom, on the other hand, would be complex. He may start off with a sense of entitlement and a thirst for knowledge and power, but as he is exposed to Harry's love and different values, he begins to change.
There might also be other extended family members or friends who play significant roles. For example, an old wizard friend of Albus who has known the family for a long time and often comes to visit and offer advice during difficult times.
Arceus, being a god - like being, would probably be very calm and wise. However, in this fanfiction, as it has a relationship with Naruto, it might also show a more affectionate and protective side. It could be a bit aloof at times due to its divine nature, but still show deep care for Naruto.
The main characters are Minerva and Harry. But we can't forget about the antagonists. Voldemort or his Death Eaters could be in the background, threatening the safety of Harry even when he is under Minerva's care. And there may be some other Hogwarts professors who interact with Minerva and Harry, such as Severus Snape, who might have a complex relationship with them in the fanfiction.
In this type of fanfiction, usually Minerva McGonagall discovers Hermione's situation of being abused. She takes Hermione under her wing. Hermione might then start to heal and grow in a more positive environment. Minerva could offer her protection, guidance, and a mother - like figure that Hermione might be lacking. This often leads to Hermione becoming more confident and showing more of her true potential at Hogwarts, away from the abuse.
One possible main plotline could be how Albus and Minerva adjust their lives to take in Hermione. They might face challenges from the wizarding community who question their decision. For example, some might think Hermione is too Muggle - born for such a prominent magical family. But Albus and Minerva would be determined to give her a loving home. They would help her grow not only in her magical abilities but also in her confidence and understanding of the wizarding world at a deeper level.