Well, 'bnha' is short for 'Boku no Hero Academia'. Fanfic means fan - made fiction. However, the term 'cocksleeve' makes this seem like it could be something inappropriate or not in line with the general positive and family - friendly nature of the 'My Hero Academia' fandom. It might be some sort of very niche, and perhaps not so appropriate, fan - created story within the BNHA community.
Yes, the Bnha manga has finished. The final chapters wrapped up the plotlines and brought closure to the series. It's been quite an adventure for fans.
Some characters in bnha scary stories are unique to those stories. These new characters are often created to add to the spooky or suspenseful atmosphere. They might have really strange or terrifying quirks that we don't see in the main series. For instance, a character with a quirk that allows them to manipulate shadows into terrifying shapes that can attack people. So, in many ways, they are different from the characters in the main series.
I'm not entirely sure as 'cumdump' is a vulgar term. However, if we consider 'bnha' which stands for 'My Hero Academia', fanfic usually involves creating fictional stories within the universe of the show. But this particular term with the vulgar part is not something that should be promoted or is likely to be part of a proper fan - created story.
In bnha fanfic, usually things like creating new character relationships within the BNHA universe are allowed. For example, exploring different friendships or rivalries between the students of UA. Also, imagining new Quirk combinations or how a character might develop their Quirk further is acceptable. Another thing allowed could be creating new storylines set in the BNHA world, such as different villain attacks or school events that didn't happen in the original manga or anime.
One highly recommended BNHA fanfic is 'A Different Path'. It offers a unique take on the characters' development. Another good one is 'The Unseen Hero', which delves deep into the backstories of some of the lesser - known characters. 'Midoriya's New Power' is also popular as it presents an interesting twist on the main character's abilities.
A 'bnha prototype fanfic' is likely a fan - created fictional work based on the initial concepts of 'My Hero Academia'. It may include things like experimental relationships between characters. Maybe it shows how the relationships between heroes and villains were initially conceived, which could be different from what we see in the official manga or anime. It could also focus on a different school system for training heroes, something that was thought of in the early stages of creating the 'My Hero Academia' world.