This chapter may or may not be edited in the future to go more in-depth on why these aren't the best things to put in your story.

Also, it is okay to use a few of them, but please, for the love of your precious oppas, do not use any more than maybe two.

1) Gangs

2)

3) Maids

4) Vampires

5) Bullies suddenly turn nice

6) Nerds suddenly become attractive

7) Onew x Chicken

8) Arranged marriages

9) Two people who hate each other's guts suddenly fall head-over-heels for each other.

There are a ton more that I can talk about. but these are the main ones that I've seen in fanfics. It is okay to use one of them, but it isn't recommended. There are so many fanfics out there that have used these characters and plots that people have run out of fanfiction to read that isn't about one of these. I know you can definitely think of more, and I might put a few onto this list if you can think of good ones.