To separate based on differences
Segregation
you're out of your element, to say the least
fish out of water
When Ritsu changes jobs to work at Marukawa Publishing house, he doesn't immediately realize that his new boss was an old flame from high school. Why?
Long time has passed / his name changed
It's comical and amusing
Humerus bone
The placement of two or more otherwise discrete fictional characters, settings, or universes into the context of a single story
Crossover
a whole that is formed by combining several disparate elements
Aggregate
a bar or tavern
watering hole
Sekai focuses on four couples navigating love and adulthood (with varying degrees of success). Each story is connected thematically by its examination of first love. What connects them literally?
All the characters work in or around the manga publishing business / work at the same company (Marukawa Publishing)
To carry something heavy like a debt or burden
shoulder
When talking about a car, this is generally unfavorable... however, in fan fiction, this is fantastically explicit.
Lemon
A gathering of people for religious worship
Congregation
The past is in the past. It's better to move on.
Water under the bridge
Chiaki Yoshino writes some of the most popular and girly Shojo manga under the pen name Chiharu Yoshikawa. Why does he do this?
To hide that he is a guy
d/2... but if you don't like that, it is also C/(2pi)
Radius
elements and interpretations of a fictional universe accepted by an individual fan, but not explicitly supported by the original work
Headcanon
Egregious
When scrutinized, it falls appart
doesn't hold water
Akihiko Usami, Zen Kirishima, and Ryuichiro Isaka are three characters that prove that Sekai Ichi Hatsukoi is related to another (similar) work by the same Manga artist. What is this story?
Junjou Romantica
If you are from the 50's, you'd say it means to do well... but if you are from the modern era, you'd say it means to screw
nail
Refers to a ship or pairing that is not featured in many fan fics, and while it can be canon, it usually is not.
Rarepair
Fond of company; sociable
Gregarious
No matter how difficult, you will get it done
Come hell or high water
When Ritsu and Masamune's high school fling ends in tragedy, Masamune is upset but determined to try and fix it. Later he hears a salacious rumor that leaves him heartbroken and makes him give up. What was the rumor?
Ritsu had a fiancee / Ritsu wasn't serious about their relationship / Ritsu was cheating on him
If you wanted a pound of drugs, you'd ask for this
Elbow
A term used sarcastically in fandom to point out individuals who have failed their children through abuse, neglect, indifference or a combination of all three!
A+ Parenting