Perhaps Albus has been acting recklessly in his studies or social life at Hogwarts. He might be neglecting his studies and getting into trouble with other students. Harry, who values education and proper behavior, would then yell at him to set him straight.
Maybe Albus has done something dangerous or disobeyed Harry's instructions. For example, if Albus got involved with some dark magic related stuff without Harry's knowledge, that would surely make Harry yell at him.
There could be a fanfiction where Albus Severus Potter gets transported back in time to the era of his father's youth. He could witness the events that Harry went through first - hand, but also accidentally change some small things that have big consequences for the present time. He then has to find a way to fix the timeline without completely erasing his own existence.
In fanfiction, Albus Severus Potter often embarks on various adventures. When it comes to the mention of 'lemon' in relation to him, it might refer to a type of trope in fanfiction where there could be some light - hearted or slightly comical situations. For example, he might encounter a magical lemon that has some special powers. However, it could also be misinterpreted as something inappropriate if not used in a proper context.
It could also be related to the treatment of Harry's friends or allies. Suppose Fudge is persecuting Dumbledore or other Order of the Phoenix members. Harry, who is loyal to his friends and those fighting against the Dark Arts, would be enraged and yell at Fudge. He wouldn't stand for any harm coming to those he cares about, and Fudge's actions in this regard would surely provoke Harry's anger.
One possible reason could be a difference in opinion regarding the safety of the characters. Maybe Molly is being overly protective in a way that Harry feels is hindering their fight against the dark forces, so he yells in frustration.
Maybe she's yelling at Ron. Their relationship in fanfictions can be quite complex. If Ron says something insensitive or does something stupid, like forgetting an important task that could put their mission in jeopardy, Hermione would surely yell at him.
There's a fanfiction titled 'Harry Potter: Albus's Destiny'. It focuses on how Albus Severus Potter discovers his own unique path in the wizarding world, different from his father's. It's a great read as it shows his struggles and how he overcomes them.
One reason could be secrecy. If Harry finds out that Dumbledore has been keeping major secrets from him all along, like about his family or his true role in the wizarding world, he might start to hate him. Another reason could be manipulation. If it seems that Dumbledore has been manipulating Harry's actions for his own gain, that would be a valid cause for hatred in fanfiction.
The plot could revolve around Albus's academic achievements. He could be the top student in his year, constantly impressing his teachers with his in - depth understanding of magic. For instance, in Potions class, he might discover a new way to brew a difficult potion, earning him the admiration of Snape (if he were still around). This would lead to other students either being jealous or looking up to him.
Well, in many Harry Potter fanfics about Albus Potter in RADS (I assume it means something like the Ravenclaw, Gryffindor, Hufflepuff, Slytherin system), Albus often faces unique challenges. He might be under a lot of pressure because of his famous father, Harry Potter. In some fanfics, he struggles to find his own identity within the school's sorting system and among his peers. He could be trying to prove that he's not just living in his father's shadow.
One interesting fanfiction could be about Albus Potter's adventures at Hogwarts that mirror his father Harry's, but with his own unique twists. For example, he might face a new dark wizard threat that is related to the past but in a different way. Another could be a story where Albus discovers a long - lost spell that Harry never knew about and uses it to save the wizarding world. There are also fanfictions that focus on the relationship between Albus and his family, like how he copes with the pressure of being Harry Potter's son.