Changkyun is the root of all of Kihyun’s problems. Okay, maybe not all. But his pesky roommate is definitely responsible for some. This time, it starts with Changkyun getting sick.

“Hey Kihyun, remember the favour you owe me?”

It takes Kihyun too long to understand what Changkyun had said, the words muffled from a raspy tone punctuated with coughing. Kihyun looks up from vacuuming to take in the bundle that is Changkyun on the bed, wrapped up and disheveled.

“No,” he says, going right back to vacuuming. It’s a lie. Changkyun had saved him and his grades a semester ago when he’d helped to translate ancient runes. Kihyun had spent hours in the library trying to figure out the damn thing only to give up. Later, Changkyun had taken just ten minutes to decode it, because he had seen Kihyun’s assignment lying around and was bored. Who’d have known having a pureblood warlock for a roommate would come in handy?

“Right,” Changkyun continues, heedless of Kihyun’s answer. “I’m calling in that favour today.”

His voice is a wreck, but Kihyun understands him perfectly fine. He pretends he doesn’t. That was the first mistake, because Changkyun’s favour is this –

“Can you go to Hoseok’s house and feed him?”

“What,” is Kihyun’s very intelligent answer. “Feed who?”

“Feed Hoseok, duh.”

Changkyun’s sass would be better if he wasn’t coughing up a lung while talking. He eases a bit when Kihyun pats him on the back (whacks him actually), and manages to say –

“Hoseok’s my mentor? And he needs blood. Which I usually provide except I’m –” another cough – “sick –”

“You need me to feed a vampire. Who’s your mentor. Because you’re sick,” Kihyun summarizes, interrupting Changkyun before he dies from talking.

A nod is all the answer he gets before Changkyun wheezes again, ends up writing the rest of the information Kihyun needs on a piece of parchment. Turns out, Changkyun has prepacked blood – Kihyun doesn’t want to know whose – so Kihyun would essentially just be doing a delivery.

“Sure,” he says, because it seems easy enough, and it’ll be good to stop owing Changkyun, that cheeky asshat, a favour. Agreeing is mistake number two.

Mistake number three is believing everything Changkyun says. Or in this case, writes.

Knock on his door. Tell him Changkyun sent you and he would let you in.

Yeah, right.

“Hello?” The address Changkyun sent him to has electronic security codes, and only an intercom for communication. Right now, no one is picking up or buzzing him in to B1-01 where Hoseok is supposed to be. “Changkyun sent me.”

Static.

Kihyun pinches his nose bridge, ready to go home because that was his fifth try already. Just then, a tiny voice sounds over the intercom.

“Wait, sorry, I was asleep. Give me a second, I’ll let you in.”

There’s what sounds like something fall