I'm not sure specifically as there could be many interpretations. It might be a fan - made fictional story related to a character named Harry and his brother, and perhaps 'bwl' could be an abbreviation for something within that fictional universe like a place, event or concept.
In the vast world of Harry Potter fanfiction, there are countless possibilities for the character of Bwl. If Bwl has qualities that align with the values of Hogwarts such as loyalty, courage, and friendship, then he would most likely be loved by Hogwarts. For example, if he stands up against the dark forces threatening the school, or if he shows great compassion towards his fellow students, he would surely earn the love and respect of the Hogwarts community.
Family loyalty is a common theme. Since it involves Harry and his brother in the context of the Battle of Hogwarts (BWL), the stories often show how they stick together and protect each other. Another theme could be self - discovery. The brother might find out new things about himself during the chaos of the battle.
Well, 'harry is not bwl fanfic' might imply that Harry has no interest in the fanfic that is centered around 'bwl'. 'bwl' could be a unique term, perhaps a story arc, a magical item, or a group in a Harry Potter - like fanfic world. Since he's not a fan, he might find the plot, the characters related to 'bwl' unappealing or not in line with his own views or interests.
I'm not sure of the exact name, but there could be a 'harry brother bwl fanfiction' where the brother is a newly introduced character. He might be a squib or a very powerful wizard. And the story could revolve around how his presence in the Battle of Hogwarts changes the way things usually go. For example, he could have some knowledge of ancient magic that helps turn the tide of the battle.
There's also 'A Brother's Destiny'. In this fanfic, the brother of the Boy - Who - Lived has his own unique powers that are slowly revealed as the story progresses. It has a great plot that weaves in and out of the main events of the Harry Potter books, adding new layers to the familiar story.
There could be. In fanfiction, the sky's the limit. Since this is a 'harry older brother of bwl' fanfic, his powers could be something that sets him apart from the original Harry. For example, he might have a power that is connected to the family's heritage in a deeper way. It could be a power that was dormant in the original story but is now awakened because of his new role as an older brother. This could lead to all sorts of interesting plot developments, like him having to learn to control this new power while also dealing with the responsibilities of being an older brother.
You can try some popular fanfic websites like Fanfiction.net or Archive of Our Own (AO3). Just search for 'harry not bwl' in their search bars, and you should get a list of relevant fanfics.
One could be 'The Alternate Path of Harry'. It explores a different journey for Harry where he doesn't follow the typical Battle of Hogwarts (bwl) scenario. Another might be 'Harry's Unconventional Adventure' which takes Harry on a completely different set of quests away from the bwl plot.