Harry's determined to make Louis like him and Louis' determined to irritate the shit out of Harry.
Or the one where's Harry's kind of an entitled asshole and Louis brings him back down to earth a bit.
"Harry how'd you get those marks on your neck?"
"Did you fight Louis?"
Or
A story in which Louis and Harry hate each other so much they viciously suck on each other's neck to purposely leave bruises, or fuck each other senseless.
Because that's how much they hate each other.
--------
Louis is the infamous Pink Robber. He is a master criminal who wears anything and everything pink and doesn't just steal cash and jewels but also hearts.
Harry is another notorious criminal. He never would've thought that while he was trying to steal a painting he'd come across the one and only Pink Robber....
Harry is the stressed out CEO of a fashion brand that he created. Louis rose from intern to the face of the brands streetwear collection. Harry still treats him like just an intern. When Harry gets a call that five models dropped out of his next fashion show , Louis and four of his coworkers are left in charge of finding five more models to save Harry's career and their own.
When the King of the Three Kingdoms became fatally sick he sent out his three sons to find their mate. Chaos ensues.
Or where Louis gets chosen to run in the election, but would rather be anywhere else.