"Please just let us into my old lab. I know my contract was terminated, but it is really important!" Han begged, before he came walking over to me.

"You're going to have to ask to be able to use it. Since I created the disease, they aren't giving me permission to go use it without another detective." He sighed.
I patted his shoulder. "That is honestly so sad, but okay, I'll go have a word for you."

So I went to the front desk.
"Can I please have access to Detective Jisung's lab."
"With him?" The lady asked.
I nodded. "It's regarding his disease, so yes. Don't worry, I've got him covered if he acts up."
The lady nodded, passing me the key.
I walked back to Han with a smile.

He pouted. "Why is it so easy for you."
"My friend, everyone loves me." I joked, as he led me down the elevator, and down the hall to his lab.

It was surrounded by marks left from the yellow tape, as he pushed them aside.
"Someone was feeding the rats. How kind." He said, pulling their cage out.
He then came up to me, holding a hand out.
I gritted my teeth. "Right. My blood."

He nodded, grabbing a needle from the counter, pulling it from its sterile bag.
Flicking against the pointed end a few times, he felt for a vein, before sticking it in.
I let out a slight yelp, but he was done in an instant, as he placed a cotton bud down on my arm, holding down.

"Keep pressure on it. I need to separate the disease from your blood." He said, walking off.
"You did that so easily, Han. I'm impressed." I said, keeping pressure on the cotton bud.
"I tried to be a doctor, but it was a lot of time and effort I didn't have at the time. So I studied in forensic science and biology, hence coming where I am now." He said, smiling sadly.
"I'm a red list criminal, however, so.."

"Han, the court is dictating the seven of you for counts of manslaughter, which will most likely be dropped. You've told me over and over again you didn't have conscious control of your decisions, so it'll be okay." I reassured, throwing the cotton bud in the bin as my blood clotted up.

He grabbed the blue liquid which had been separated from my blood, sucking it into a syringe, walking over to the rat cage.
"Life won't ever be the same. But, asides from that, here is why I brought you here. This is Remy, and this is Remus. Their child, a female, is Rola. I'm very creative." He chuckled.
"A rats natural instinct is to continuously mate, children or not. I have this idea about the disease I made. I referred to it as the plague of jealousy, but it has nothing to do with being jealous." Han explained, reaching in as he grabbed for the male of the group.
"It's to do with desires, and what that person wants. Lucky for you, our whole group just wanted to be with you. But say, a money hungry person was infected, they would do anything to get money. Whilst still alive, they still have a bit of their personality. But," He said, injecting the rat, before reaching for another syringe, filled with a clear white liquid.
"When they are dead, they are just a desire driven maniac." He explained, injecting the rat with what I assumed was rat poison, as he placed it in the cage.

In its last moments, it hung by its partners side, before curling into a ball, going stiff.
A few minutes later, it was alive again, it's hair ruffled and eyes a bright red as it jumped between its partner and child.

"See? A rats desire is to mate, and that is what it will keep doing. Now, let's take Changbin's situation. He must've been thinking about you in his last moments. Probably along the lines of 'I need to protect y/n', which would explain why he kidnapped you to protect you from us." Han finished, pulling the male out the cage, as he snapped its neck in one quick movement.
"The problem is, they become like zombies, and cannot die."
It started twitching again, as Han held it down on the lab table.

"The only way to kill them, is to burn them into nothing but ashes."
He placed the rat in a separate cage, as it jumped at the bars, trying to get to the girls.

"But it's gone, isn't it?" I asked.
Han looked at me, smiling sadly.
"You are the only person who can pass it on. As long as your blood doesn't get into any sort of orifice on a person or animal, it will be gone. So you better hope to any sort of god that will listen that the doctors who stitched you up refrained from touching your blood. It's very weak, however, and would probably need a large contact. I will try come up with a cure, but in order to do that, I'm going to need my lab back." He said, as I nodded.
"I'll ask Bang Chan to help me get your lab back. Anything else I should be, uh, aware of?" I asked.

"Don't do anything naughty. Don't be, y'know, sexually active. Bodily fluids most likely count, as it's just like any normal virus." He said, raising an eyebrow at me. "I know you and Hyunjin are dating and all.."

I shushed him right away.
"Han, no. I wouldn't in a million years. Thank you." I said, feeling my face heat in embarrassment.
He just laughed. "I know, but I thought I would tell you. I'll work on the cure on my own. I made this mess, I'll fix it."

I smiled. "See, Han, you're redeeming yourself as it is."

"I wish it was that easy."

As we were walking out, I heard commotion from the front desk, a familiar voice talking loudly with the receptionist.

"I need access to Han Jisung's lab! You don't understand! Something has happened and I need his equipment." He yelled out, as the lady calmly looked to him.

"Detective Hwang, please calm down. You have been restricted access from the labs. I can't help you."

Hyunjin caught my gaze, running over to me as he ignored the lady.

He pulled me into his arms in a hug, as I stood there frozen.
"You saw me this morning- is everything okay?" I asked, looking up at him.
He shook his head.
"When I was searching for you, there were these rats. I think- I think the plague, the disease of jealousy we made. It's gotten out... I know it's just rats but as soon as they bite someone..." He trailed.

My eyes widened, as I stepped back.

"Oh fuck."