In the Harry Potter fanfiction 'Harry Potter He Was Cold', what could be the reasons for Harry being cold?

One reason could be that Harry wants to preserve the integrity of his real story. Fanfiction often takes the original story in different and sometimes wild directions. He might worry that it could distort the truth about his adventures, his friends, and the sacrifices made. For example, some fanfictions might create romantic relationships that didn't exist or change the motives of characters, which could mislead those who are new to the real story of Hogwarts and his battles against Voldemort.

In fanfiction, Harry Potter might be angry if his friends are in danger and no one seems to be taking it seriously. He's very protective of his friends, like Ron and Hermione. So if some authority figures in the story are being dismissive of the threats his friends face, that would surely make him angry.

One reason could be a reaction to the Ministry of Magic's mismanagement. In the original story, the Ministry often made mistakes and had corrupt elements. In fanfiction, this could lead to Harry becoming an anarchist as a way to oppose such a flawed system.

Another reason might be related to his family. In some fanfictions, his parents' story or his relationship with his family members could be distorted. Harry has a strong connection to his family, especially his parents, and any wrong portrayal of that could make him pissed off.

One reason could be the allure of power. Grindelwald was extremely powerful, and Harry, who has always been in the midst of power struggles, might be fascinated by that level of magical ability. Another reason could be a sense of curiosity. Harry has a thirst for knowledge, and Grindelwald's unique ideology about the wizarding world might intrigue him.

One possible reason could be that he's worried about Ginny's safety during the pregnancy. He might be overprotective and his concern comes out as anger.

It could be a case of misinformation. Someone in the story might have spread false rumors about Harry being the father for their own motives. Perhaps they wanted to cause chaos or gain something from the situation. So, the whole idea of Harry being the father is just a false story that gets spread around the wizarding community.

One possible reason could be a different interpretation of his actions. Maybe in this fanfiction, his use of magic outside of Hogwarts' approved ways is seen more harshly. For example, when he used the Patronus charm to save himself and Dudley in the 'Order of the Phoenix', in this alternate view, it might be considered a criminal act due to the Statute of Secrecy implications.

One possible reason could be that Harry breaks school rules in the fanfiction. For example, if he ventures into the Forbidden Forest without permission. Dumbledore is strict about the safety of students and such disobedience might lead to punishment.

Maybe he's curious about different interpretations of his own story. In fanfictions, his character might be in new and exciting adventures that the original books didn't cover.