Things I that annoy the hell out of me in fics (list may grow):
1) Authors showing off their schizophrenic side. i.e. Authors writing out a conversation before the story that consist of them talking to another person, or a character from the fic. Sorry, I didn't click on your fic to read some pointless rambling that you find funny that has no real point to it.
2) Author's Notes. Sorry, I don't see the need for you to have 1k word AN's before every chapter of your story. It's even worse when you have one after your chapter as well.
3) Chapters less than 3k words. Honestly, if you're going to write something, make it count. It's even worse when more than half of the chapter count is taken up by #1 and #2 above.
4) Entire sentences in another language, especially if the translation is at the end of the chapter. Okay, you want to show off how knowledgeable you are by writing sentences in another language. How about you go back and fix those grammar and spelling mistakes instead?
Harry Potter: Pirate Journey
Summary: During the events in the Chamber of Secrets, Harry finds himself sent to the One Piece universe. After a series of events in this new world, Harry decides to set off on a pirate adventure. Will feature a pirate crew made up of various female characters from many different anime/manga. Harry/Harem
Current Progress: Chapter
Hottest Anime Girls (will fill in as they are revealed in Harry Potter: Pirate Journeys, as they will all be a part of Harry's crew/harem)