The phrase contains inappropriate and vulgar language. If we assume 'Harry' is a character name, it seems to be about a situation where this Harry is involved in some sort of destruction related to a fan - created fictional work, but the use of 'tight cunt' is unacceptable in proper language.
Using such a title violates the norms of good taste and respect in the fan community. Fanfic is meant to be a form of creative expression that is inclusive and family - friendly, not containing such offensive elements.
It's a rather odd statement. 'Harry' here might refer to a character named Harry in a particular fandom. 'Ruins' implies that he somehow spoils or negatively impacts a 'fanfic' (fan fiction). However, 'tight ass' is an inappropriate and unclear part in this context. It could be a very unorthodox or poorly worded description within the fan - created story.
We could rewrite it as 'Harry ruins a certain fan - created story'. This way, we remove the vulgar and inappropriate language and focus on the more general idea of Harry having a negative impact on a fanfic.
It's difficult to say exactly. 'Harry' is likely a character in a fanfic. When it says he 'ruins' it, he probably does something that goes against what the fanfic was supposed to be about or what the fans expected. But the 'tight ass' part is inappropriate and doesn't seem to have a proper meaning in this context. Maybe it was just a random or wrong choice of words by the person who came up with this statement.
Definitely not. A normal fan - created concept for Naruto would revolve around his adventures, his battles against villains, or his development as a character. This phrase contains offensive and inappropriate language which has no place in the world of proper fan - creations. It's a deviation from what is considered appropriate and positive in the Naruto fan community.