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Death Note Kinktober 2024
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Published:
2024-10-01
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A Sizeable Conundrum

Summary:

Light has a small cock. L would like to take a large cock. They make do.

Notes:

Written for Death Note Kinktober Day One: Big Dick

I was envisioning this as a complete AU but you could easily imagine it as an 'everyone wins' futurefic if you would prefer -- be in charge of your own destiny.

Happy Kinktober, everyone!

Work Text:

Light had never been ashamed of his penis. He was aware that it was the sort of thing that some men — lesser men, in his opinion — might be ashamed of, but he was not.

His dick was small, and that was great. It fit into tight spaces. People who might otherwise find insertion painful could take him easily. On occasion he’d received disappointed looks, but most people regarded his appendage with relief. When all was said and done, a large dick might play well on Pornhub, but a little one had versatility in the physical realm.

Unfortunately, it was causing compatibility issues with his boyfriend.

“I would like to take a giant cock,” L said, spreading his hands outwards to indicate an ideal size.

Light stared at the empty space between his palms. He thought about horses.

They were lying on their backs in their bed. The summer night was warm enough to leave the windows open, and the curtains fluttered inwards, moved by a gentle wind that carried with it the scent of chrysanthemum and yesterday’s rain. The moon was bright, and he could see L’s eyes glittering even in the dark, clearly delighted by the visions in his mind.

They had been dating for four years, and he had seen and handled Light’s penis an above-average number of times; he must have been aware that this was a service Light was unable to provide.

“Utterly huge,” L said. “Destructive. I want my ass ruined forever.”

“Well,” Light told him, as patiently as he could manage, “I can’t help you with that.”

Very abruptly, L sat, then leaned over and peered at Light. “You asked me if I wanted to try something new. This is new. I want to try it.”

Light did not sit up. He simply stared back at L’s gigantic eyes. Looming over him, L looked like some sort of marsupial sprung from a nature documentary. He had just showered and his hair was still slightly damp; he smelled like the avocado soap which had been on sale when Light last went grocery shopping.

“Right,” Light told him. “I get that. And I appreciate your honesty. But I can’t materialize a giant, ass-destroying cock.” He considered this for a moment. “Do you want me to buy you a dildo? I can buy you a dildo. I get paid tomorrow.”

L wasn’t blinking. “No. I would like it to be yours.”

“I don’t know what to tell you. It’s finished. It’s grown. You’ll simply have to make do.”

“No,” L said, immediately. “I don’t accept that.”

Light considered smothering him with his pillow. Instead he did a breathing exercise. He breathed in for four beats, breathed out for four beats, then held. He envisioned a warm glow flowing through his limbs. When he was finished, he was a better, calmer version of himself. He had recently begun therapy because he was, according to L, rapidly devolving into villainy, self-sabotage and madness. L had also begun therapy on account of his clinical depression. It had taught him to enforce boundaries and ask directly for what he wanted, which was apparently for Light to grow a giant cock on the spot.

“Okay,” Light said, filled with with a beautiful inner peace. “You are insane. You are acting insane. We’re breaking up. I’m breaking up with you. I’m moving out tomorrow. I’m taking the cat.” He adored the cat. She was little and white and enjoyed biting visitors. The cat preferred him to L because L refused to feed her from the table.

“You aren’t breaking up with me,” said L. Then he leaned even closer. Light thought he might kiss him, but he didn’t. He could feel the heat of L’s body against his. “Light. Last week. Were you really a princess getting ravaged by her rescuing knight?”

“No,” Light said.

“Then we understand the principle of the matter.” L placed one hand on Light’s hip, then leaned somehow closer and whispered into Light’s ear.

His breath was warm; Light shivered. The scent of avocado was all around.

“Please, Light. Will you do me the honour? I want to curl my tongue around your gigantic cock. I want to choke on it. I want you to stick it in my ass so deep I can feel it through my stomach.”

Despite himself, Light felt his moderately small cock stir. It wasn’t the words, really — it was the intensity with which L had spoken them. He decided that if L wanted him to have a huge penis he could have a huge penis.

He slid backwards so he was no longer directly under L’s face, then sat up.

“Yeah,” he said. “Okay, sure fine. You can — choke on my gigantic cock.”

L’s eyes glittered. “It’s twelve inches.”

“What?” That sounded horrific.

“Twelve inches. Seven inches around.”

“Do you —“ Light resolved to show L some cylindrical objects in the morning, for the purpose of comparison. “Okay, yeah. Sure. It’s — yeah. It looks like that.”

“It’s going to ruin me.”

“No, it — yeah, I mean, yes. I think it would.” L squinted at him, and Light realized he was ruining the fun. “Yeah,” he said again, with more commitment. “It’s going to wreck you. My huge cock. It’s going to —“ He fished through his mind for things people said in pornos. “It’s going to split you open.”

That seemed to work. Even in the dark, Light could see that L’s face had gone flush. He looked blotchy in the moonlight; he was shifting gently back and forth on his knees.

“Yeah,” whispered L. “Split me.”

Light reached down and pulled his cock out of his pyjama pants. L stared at it, transfixed. “It’s huge,” L announced, with such determination that Light nearly believed it.

This wasn’t his fantasy, not really, but he did like when people looked at his cock and told him it was amazing, even if they weren’t strictly speaking about his cock-as-it-was, and anyway L was his favourite person on the entire planet and he liked to see him happy. And so he stroked his cock, which was already stirring without his help, and said, “You won’t be able to walk for weeks when I’m done with you.”

“Yes,” L breathed.

“You’ll get —“ The word haemorrhoids sprang to mind and he cast about for literally any other word in the universe. “— really hard. You’ll get really hard when I — when I spray my cum all over your face. There’ll be buckets.” Then, getting into it. “‘Cause my balls are huge, too, and full of cum.”

“Uh-huh,” L said. He was squirming in place.

“And you will be too when my giant dick pours cum into your wrecked ass. It’ll — it’ll drip out of you. Like Senga Falls.”

“Please,” L said. “May I suck your huge cock?”

“Yeah,” said Light. He perched back on his elbows to make this a little easier for L. He’d always found the mechanics of dick-sucking a little inconvenient. Pleasant, but sometimes geometrically unsound. “Suck it. Choke on it. S’huge.”

He felt vaguely that he might have been embarrassed by the generally inane nature of his words, had this been in the early days of their relationship, but it wasn’t, and he didn’t feel anything but pleased as L curled around his cock and took him into his mouth, and he felt even better when L valiantly pretended to choke. He was an excellent actor, L; Light might have believed it if he didn’t know him so well.

He placed a hand around the back of L’s skull and twined his fingers through his hair, then threw his head back and stopped thinking about anything at all.


Afterwards, while he was half-asleep, dick neatly tucked away and both of them cleaned off, L curled against his chest. Light breathed out, pleased at the touch until he felt a finger trailing down his carotid artery.

Light shivered, then opened his eyes.

“Are you really breaking up with me?” L said.

“Oh,” said Light. “No. I wouldn’t. I love you.”

Possibly he wouldn’t have said it quite so clearly if he’d been more awake, but he wasn’t, and so the words came out easily. He liked the night, for that reason. Sometimes in the day he had trouble saying the things he wanted to say.

L hummed, then burrowed into his neck. It was a little uncomfortable, actually. L had a body like a furnace and sharp little shoulders. But he didn’t mind; that was his favourite furnace of a body and his favourite sharp little shoulders and his best friend in the world pressed against his side.

He put an arm around L and shut his eyes again and allowed himself to drift off into sleep.