The (rut) cycle (shinsoukoku)

Chapter 1

Atsushi woke up with a big headache and slowly got out of bed. He checked his temperature and it was a bit higher than it should be, but he ignored it. If he was sick, the tiger's regeneration ability would heal him soon.

Atleast that's what he thought.
The headache was still there even after 4 hours and 2 strong painkillers.

„Atsushi, are you alright? Your face is very red..." Kyoka said but Atsushi dismissed her.

„It's nothing. I probably just need some fresh air. I'm sure it will get better while I'm on the mission with Akutagawa" The weretiger answered and after finishing his report from the last mission, he stood up and went to Dazai's table. Him, Dazai, Chuuya and Akutagawa were all going on a mission together, an important one. They were supposed to retrieve an important document which would contain some clues on where the magical book is which can grant anything that is written inside.

„I'm almost done, Atsushi~" Dazai jokingly said and the weretiger's eyes wandered to the big pile of papers. Dazai was probably going to give it all to him tomorrow and he sighed.

„Sir, we're going to be late. The pick-up car is already here" The weretiger said after looking out of the window. A black car was there and so were the two port mafia executives. Chuuya Nakahara, who was wearing his usual hat and Ryyonsuke Akutagawa, with his sunglasses even though there was barely any sun outside.

Dazai wrote one last sentence and put the pen away. He leaned back in his chair, stretched his arms and yawned.

„Fine Atsushi. I'm going" Dazai said and stood up frmo his chair. He grabbed his coat and the two agency members went down the stairs.

„Finally" Chuuya remarked and Dazai stretched out his tongue.

„Is the Chihuahua angry at us? I heard it's in your blood" Dazai joked and moved out of the way when Chuuya tried to punch him.

Meanwhile, Atsushi and Akutagawa were silently standing by the car. For some reason, Atsushi felt extremely warm while next to his enemy but still decided to ignore it. Unfortunately, he also felt his dick go hard and quickly turned around. He tried to open the doors to the car but they were locked for some reason.

Chuuya probably had the key and locked the car while they were waiting for him and Dazai.

Akutawaya gave him a side eye and took out the keys. Apparently he was the one to have them. He clicked the button and the door opened. Atsushi almost jumped inside and sat by the window. He took one of the blankets that was lying there and covered himself with it. Then, he saw how Akutagawa was raising a brow at him.

„Did you hit your head, Jinko?" He asked in a mocking tone and Atsushi rolled his eyes.

„I'm cold. That's all. Just ignore me." He stated and looked out of the window.

About 5 minutes later, the fight between Dazai and Chuuya stopped (at least for a little while) and the four members were all in the car. Chuuya was driving, Dazai was in the passenger's seat and Akutagawa and Atsushi were in the back, both looking into their respective windows.

„Can I open the window?" Atsushi asked and after Chuuya nodded, he opened the window and took a deep breath of the fresh air. Unfortunately, his problem was only halfway gone. His headache was smaller, but his body was much warmer and Atsushi had the need to jump out of the car and just run beside it instead.

He took a deep breath and closed his eyes to calm down. That helped, but only a little bit. Fortunately, it was enough for them to finally arrive at the destination.

„Does everyone completely understand the plan?" Chuuya asked the squad and everyone nodded. Then, he divided the group in two; soukoku and shin-soukoku. It wasn't the name he wanted to call them, but it was Mori's orders.

„We're going to find the culprit. You go find the stacks of drugs and money. There's a safe where he probably hit it" He told shin-soukoku and they nodded, although a bit hesitant. Their teamwork was getting worse for a while now and they didn't know the reason why. This mission was here to let them find out what they were doing wrong.

Akutagawa and Atsushi immediately went into the big gray building and parted ways with the other part of the group.

Atsushi was feeling like shit again and now even started sweating. Fortunately, Akutagawa didn't seem to notice anything.

The halls were silent. But it was the silence that made it seem more dangerous. There were no armed forces anywhere and even all the cameras were disabled. Disabling them was Dazai's job, but there was no way he could have done it this fast.

Akutagawa opened every room they came across but so far, none of them were the safe they were looking for. And anyways, all thsoe doors had too little security to hold gold inside.

And when they finally arrived at the last door, they found it closed. Akutagawa had to use Rashomon to pick the lock. But before they could actually turn the lights on and look inside, they heard voices and quickly hid inside. Rashomon closed the door and Atsushi accidentally fell on top of the mafia executive.
And that was very bad for him, especially in his condition.

He fell on Akutagawa's dick which was now touching his groin. The moan left his mouth before he could stop it and his instincts that he never had before took over.

Before Akutagawa could react, his hands got held above his head and Atsushi's lips were on his neck, licking and kissing him. The darkness in the room made everything worse.

„Jinko, what the hell-" He started trying to kick Atsushi away but the man on top of him seemed stronger than usual. Rashomon started ripping away Atsushi's skin and the weretiger hissed in pain. Akutagawa used that moment of distraction and managed to crawl away from under Atsushi. As soon as he stood up, he turned on the lights and stood in his fighting stance, ready for any attack.
The lights made Atsushi dizzy. He felt drunk even though he had never drank alcohol before.

He slowly looked at Akutagawa and nearly jumped at him. His entire mind was filled with only three thoughts; mate, fuck and Akutagawa.

The mafia executive threw a metal bar at him but it barely did anything. Rashomon tried to rip him apart but it was as if Atsushi's skin was much thicker. Atsushi took Rashomon off of his back and threw it away. Akutagawa ran away quickly but the weretiger managed to catch him. He gripped his arm and turned it in an uncomfortable position. He pressed Akutagawa against the wall and Akutagawa felt something hard touch his ass.

„Fuck you. Get away from me you filthy, useless weretiger" He yelled and threw his head behind. He hit Atsushi and got released from his grasp. He ran off to the edge but soon realized there was no other place he could run to.

He turned around and kept staring at the weretiger who was holding his head.

Atsushi was breathing very heavily and felt his mind come back. He had almost no control over his body a few seconds ago, but the hit on his head helped him regain control. He looked at Akutagawa and swallowed.

Something was deeply wrong with him and he needed to fix this as soon as possible.
___________
I don't know why but on some days I really feel like writing a few of my favorite characters doing bad stuff. So I guess here we are.

I don't have the entire fanfic planned out yet, just a few chapters, but I'm pretty sure Atsushi's only going to get worse from now on.

Anyways, I hope you enjoyed reading this chapter
-Nat