#som!reader

You were lounging on the bed and flicking through channels on the TV, waiting for Light to return with some takeaway. Nothing was jumping out as particularly interesting… Well, you could always just watch the news.

“-have continued to rise. The anti-Kira group, as of now still unnamed, has been taking credit for the attacks. The new chemical developed by this-“

You switched off the TV in disgust.

This new ‘anti-Kira’ group had been causing havoc for a few weeks. The fact that they were outspoken against Kira was not unusual per se, but they were taking it further than any other group. They had developed a chemical that, when in contact with an omegas skin sent the omega into a faux heat so powerful it could kill them if they didn’t have an alpha to help them deal with it. You were extremely glad that Light’s identity as Kira wasn’t public yet, because as much as your relationship wasn’t typical, you would still hate for your omega to get hurt in any way.

It was disgusting what the group was doing. But you knew that one day they would slip and Light would have enough information to kill them all.

Suddenly, you heard the front door slam open, scaring you half to death.

What the hell?

Running downstairs, you almost paused to grab a weapon before realising that it was only Light that you could smell… and it smelt like he was in heat?!

Picking up the pace even more, you reached the bottom of the stairs and saw Light  half collapsed on the flood of the entrance hall, choking and growling in front of a still wide open front door. Without pausing to think, you slammed the front door shut, wary of whose attention Light may have garnered smelling the way he currently did.

“I’m going to kill them all,” Light suddenly shouted, staggering to his feet and knocking into the banister.

“Light, what the hell is going on? You’re not supposed to be in heat, you’re on suppressants,” you ran up to support him only to realise that his shirt was soaking wet. The moment you touched him, Light leant into you with a low keening noise before he growled and pushed you away, falling to his knees on the floor.

A lightbulb went off in your head.

Oh shit.

“Those fucking lunatics got you, didn’t they?”

Light didn’t respond. He was panting heavily while slowly returning to his feet once more. He winced violently, pressing a hand to his stomach.

Oh, shit, you needed to help him, your mate was hurting. Your panicked mind was a little muddled. Bed. You needed to get him in bed.

Light allowed you to drag him upstairs while you dutifully ignored his enticing scent and sizable wet patch on the seat of his trousers, knowing that for your own safety, it was best you didn’t point either of those things out.

You laid him down on your bed (Light didn’t nest so this was the best you could do) where he lay panting and wincing. You rested a hand on his forehead for a moment. His temperature was already through the roof. Cooling him down was probably a good idea, but as your hand touched Light’s belt buckle, he growled you away from him.

You sighed and removed your hand. Was he seriously going to be difficult about this? You knew better than anyone what he was like, but did he seriously not understand that this could kill him?

“Light, you need my help,” you started, holding up your hands in surrender when he turned to glare at you. “I know you don’t like that, but unless you want all of your work creating this new world to be for nothing, you need to let me help, you know that.”

Light only continued to glare at you through his sweat soaked fringe.

You held back your own frustrated growl. You needed to do something!

You cast your mind back to the interviews you’d seen with the omegas who had been hit with and survived the chemical, how they said that physical touch from an alpha had soothed immense amounts of pain and an awful burning sensation.

You looked over at Light. He definitely looked like he was in immense pain. He wouldn’t like this, but you couldn’t let him die simply because of pride.

Before he could protest, you slipped a hand around the back of his neck, cupping it firmly, and then wriggled another down the collar of his shirt, pressing just as firmly against his bare chest.

Light tensed for a moment before every muscle in his body seemingly relaxed at once. You kept your hands there, hoping to continue providing relief, until Light came to his senses and his eyes snapped up to yours. He seemed to struggle with words, battling against everything that he was feeling, everything those bastards forced him to feel, and make a coherent sentence.

“I’m not… weak,” he said hoarsely, looking a little lost. “I’m not weak.”

“You’re not weak,” you agreed easily. “You’ve been assaulted, but it wasn’t your fault, and as soon as you’re better, you’re going to give them ten times as much as they gave you.  But you have to feel better first.

“Let me help you,” you implored, squeezing the back of his neck where your hand was still resting.

Light let out something that sounded suspiciously like a whine, but eventually he nodded his head.

“Okay,” he agreed with an edge to his voice. “Help me so that I can destroy them.”

“Of course,” you kissed him on the forehead. “We need to hurry before this gets any stronger.”

…

And get stronger it did.

“It hurts,” Light moaned, curled up into a ball, arms wrapped around his stomach, cradling where the pain was at its most unbearable. You had only left him for a moment, but the pain apparently did not waste time in coming back the second you stepped away.

“I know, I’m sorry, omega, I’m sorry,” you rushed back into the room with a pitcher of water. “But you need to drink something Light, your temperature isn’t going down and you’ve lost a lot of fluids.”

“Surely three times is enough?” Light said, desperation lining his voice. “I can’t-“

“I know, I thought it’d be enough too, but please drink something first, then we can figure out a plan.”

You crawled back onto the bed, still naked, and pulled an equally naked light into your lap, visibly easing his pain.

You tried to hold the glass up to Light’s lips, but he snapped at you.

“I’m capable of doing it myself.”

“Okay,” you soothed, handing him the glass, not wanting to cause any more turmoil than strictly necessary.

Light reached out to take the glass but the second he had a grip on it, his hands started to shake. It you hadn’t been so fast the take the glass back, he would have dropped it all over the bed.

Humiliated tears started to gather on Light’s waterline. You’d never seen him so vulnerable.

“It’s okay, Light.”

Light shook his head.

“It’s okay,” you whispered again. “You’re not weak, you’ll show them. We just need to burn this out of your system.”

“We’ve already done it three-“

“I know,” you cut him off. “But I thought about it and it’s possible that I need to knot you properly, Light, and I know you don’t like it, but I can’t think of anything else.”

Light pressed his lips together, displeased, but he relented.

“Fine, anything that will just make it stop.”

You smiled at him, grateful that he was letting you take care of him with less of a fight.

Light preferred to be on top, but he was too weak to hold himself up right now, so you laid him gently back on the bed and slipped between his legs. The previous three rounds had left Light’s hole relaxed and open, so you effortlessly slipped back inside his warmth.

He choked on a groan as you pushed in but quickly quieted down and relaxed shortly afterwards. Sexual contact with an alpha was the only thing that was soothing his pain right now.

You sorely hoped that this was the last time you needed to do this. As much as it was novel (and if you were being honest, nice) to have Light be so pliant and vulnerable, you’d rather he was comfortable and happy, something which he was currently decidedly not.

Light had a dazed and faraway look on his face as thrust inside him methodically. To try and bring him into the moment, you wrapped a hand around his cock and rubbed your thumb over the end in quick but consistent circles.

Light jolted at the touch and bucked up into your hand, and you, having successfully engaged him, switched to long sweeping strokes up and down his cock, just the way he liked it.

“It burns,” Light whimpered suddenly. “I want it over, I’m going to kill them all.”

“I know baby, I’m almost there, it’ll all be over soon,” you tried to soothe him, hoping you were right about knotting being the way to fix this. You needed to hurry up and end this. So, you did.

You hiked both of Light’s legs up to give you a better vantage point and increased the power behind your thrusts, ending up somewhere between missionary and the piledriver position. To make it feel even better for Light, you leant down and sucked and bit at his nipples. They were incredibly sensitive and Light normally forbade you from playing with them because he was too embarrassed by his reactions, but right now it was what you needed to end this.

Light gasped as your tongue made contact with his chest, hands leaping to grab your head, pulling it roughly against his rosy flesh. The biting and sucking quickly made his nipples a swollen red colour which proved to only make them more sensitive.

At his admittedly arousing reactions, you knot started to swell, catching on his rim and forcing you to bury inside him before it was too late. The moment you became locked together was clearly too much for Light who wasn’t used to the sensations, and he clenched tightly around you as he was knocked over the edge into his own orgasm while you filled him up. His fake heat pheromones had impacted you more than you realised, and it’d been a long time since Light let you cum inside him, so your instincts went a little crazy and cumming for much longer than you normally would, a small bulge appearing on Light’s normally flat stomach.

As you came down from your high, Light was just laying back against the bed and panting with his eyes firmly closes. You were overjoyed to see that he already looked better.

“We’re going to be stuck like this for a while, my knot wants to make the most of it, I think,” you joked, shifting you both around so that Light could sit comfortably on your lap while you leant against the headboard. “Are you feeling better?”

“I’m fine,” Light sluggishly snapped, resting his head on your shoulder. From the interviews with other omegas who’d been splashed, once they dealt with the heat, they felt completely exhausted. You could tell that Light was losing a battle against the fatigue.