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Published:
2026-05-26
Updated:
2026-06-12
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47,794
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9/41
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Dynamics Game

Summary:

(DomSub Verse take on Soukoku)

A few months after Chuuya Nakahara, a remarkable sub, joined the Port Mafia, a long series of suspicious attacks caused troubles to the organization. Mori couldn't leave the matter unresolved, so he requested Chuuya and Dazai Osamu to work together on this mission and discover the identity of their new enemies.

This proved to not be an easy task for them, who always found themselves arguing or getting on each other's nerves. Their opposite dynamics didn't make things any better, becoming the main issue of conflict between the two. Dazai had the reputation of being a feared dom, with an incredible glare and an insatiable thirst for control, while Chuuya was stubborn by nature and a rebel when it came to the game of dynamics. Chuuya was unlike any sub Dazai ever met and wished to have him obey, but Chuuya was determined to not let that happen, no matter the cost he would have to pay.

Notes:

Hello! This is the longest fic I ever wrote in my life. After THREE YEARS since I first started it, I can proudly say that it's finally finished. The story is complete, but all I have left is to do some final editing. Idk how often I'll post, but at least once a week will be for sure. PLEASE READ THE TAGS!!

[Edit: Chapters marked with a * contain explicit sexual content. If you're here for smut, go for it!]

Warning AGAIN for your sanity: this fic contains implied/referenced rape, SA, explicit sexual content, past trauma, dubious consent, abuse, slow burn, hurt/comfort, plot holes, (I hope NOT tho), scenes that certainly won't make sense in real life (technical stuff, like how trains work for example, it killed me fr) and possible spelling mistakes as English is my second language and I have no beta.

****Here are some general aspects about the Dom/Sub Verse that you need to know beforehand:***

Each individual is born with a specific dynamic: dominant (dom) or submissive (sub). It's similar to Omegaverse, but without the mpreg/knots/heats/etc).

Specific terms and rules for this verse:

Doms have the ability to use something known as commands. Some examples: Kneel, Crawl, Stop/Stay(still), Come, Roll, Present. There can be more of them, depending on the dom's intention and use of glares, but those are the most common and known by everyone.

Glare - basically a dom's power/ability/intention to control/dominate. It can be sensed by other people. The stronger the dom, the harder it is for others, especially subs, to resist it.

Play - When a dom uses his glare on a sub, it turns on a switch (a sub's natural drive to submit), which will make the sub want to obey.

Subspace - after a play, if the sub is satisfied and the dom provides aftercare, the intense feelings of comfort and pleasure might make the sub go in subspace, a mental state in which the sub feels the most satisfied, calm and happy, as his needs were met and the play was done correctly.

This state can last somewhere between 5 to 30 minutes or more, depending on each individual's characteristics. The sub won't be able to move much and his body will be completely relaxed. Forcing a sub out of this state will cause extreme stress on the body, risking to go straight in a subdrop.

Subdrop - if the sub doesn't satisfy his drive for submission for a long time or is unwilling to obey a certain dom that forced commands on them, a play can cause frustration and stress on the sub's body. In extreme cases, it leads to subdrop, which is a limp state and the body basically shuts down. The sub can experience severe depression, panic attacks, hyperventilation or even death.

A dom can help a sub recover from a subdrop by providing aftercare.

Aftercare - it refers to the reward the dom gives to the sub as a result of the sub's obedience. It varies on the context and nature of relationship*, from compliments, kind words and gentle touches to sexual pleasure, gifts, etc. If not provided, it can make the sub feel frustrated/worthless/used (depending on every individual's personality and characteristics).

*the purpose of a play is not always sexual and doms can express their gratitude towards subs without ulterior motives.

Safe word - as in BDSM, this one is used to stop the play if the sub feels uncomfortable or is being forced against their will by their dom. Using the safe word in a play has two effects: it will stop the dom, as they will snap out of whatever they are doing, and it will cause a lot of stress on the sub.

Suppressants - as in Omegaverse, subs can take suppressants to increase resistance to doms' glares.

*There are more other rules and exceptions, but they will be explored throughout the fic :)

This Dom/Sub Verse theme was inspired by a BNHA doujinshi named "Antinomie" by Cai.

Enjoy!

Chapter 1: Prologue

Chapter Text

"You did it again," Mori said, looking down at the poor guy suffering on the floor of Dazai's office.

"And I assume this is your doing, isn't it?"

Of course Mori didn't answer his question.

"It's not my fault he claimed he can handle my glare," Dazai added.

Dazai crossed his arms and followed the boss with his gaze as he approached the mafioso, who was lying on the floor. The chamber lit up from a sudden lightning on the sky, revealing just for a brief moment the mess of papers and other documents scattered on the desk. The room was lit only by a dim lamp positioned beside the desk as the raindrops were sliding down the window.

"And you had to prove him wrong, right?" Mori sighed.

He crouched down next to the man and gently stroked his head, trying to calm him down while whispering something which sounded like encouragement in a low voice. It made Dazai wince.

"You'll kill someone like this one day," Mori turned his head to Dazai. "You have to learn to control yourself. At this rate, it doesn't even matter how strong the sub is. You're too rough."

Dazai fixed him with his eyes. "You trained my glare to be strong like yours, now you're mad that I'm too rough?"

Mori glared back at Dazai with a serious look in his eyes. To him, Dazai sounded rather defensive than rebellious, but he still didn't like his attitude towards the matter.

"Don't get me wrong, Dazai-kun, I'm very proud of your progress, but now you have to learn to control it."

"Why? I can command whoever I want and I'll be satisfied," Dazai said.

Mori did not reply right away, giving Dazai the opportunity to watch quietly how the man he had almost sent into subdrop, more or less intentionally, was now slowly calming down.

"And what if there will be a time when you won't be able to do that so freely?" Mori spoke again. "Remember, now I have good subs in the Mafia as well. We've changed our ways and the Mafia no longer tolerates dynamic discrimination. You can't be a good leader if everyone is afraid of you."

Dazai was aware that he won't be able to fix his problem if he doesn't understand where his mistake was here, but he was truly clueless and somewhat indifferent for now.

"I'll look for someone more suitable for your temper," Mori continued as he stood up.

He wished that what happened here would be a lesson for Dazai, though he wasn't very optimistic about it.

"Go ahead," Dazai replied. "But don't expect the impossible from me."

***