Warning: Contains yaoi and tcest so if you don't like, don't read. You have been warned.
Chapter 1: The Presented Problem
Donnie sighed as he pushed a pencil across his desk, the design of his new invention lost in his thoughts of the past year. Everything had been so normal. Battling the Kraang and the Foot, fighting amongst themselves and strengthening their bonds as brothers, and spending time with friends. Then, the unexpected happened, in the spring.
Leo and Raph had both become more aggressive. The sparring matches in training had grown from their normal rivalry to full blown out shows of aggression and power. Master Splinter had to forcible separate them to stop the fighting, but it didn't end in the dojo. Their vocal fights increased and the lair had become a hostile environment where Donnie had hid in his lab and Mikey retreated to his room to stay away from their angry older brothers.
Donnie had figured something had to be up when Leo began to start as many fights as Raph did. The leader rarely would start something with the hothead of the group. Unfortunately, Mikey had been the one to witness Leo's strange behavior first and had nearly been hurt in the crossfire of the aggressive behavior of the two. The youngest had clung to Donnie for the next few days, unsure of what to do with their brothers who hadn't batted an eye at what they almost did.
It wasn't until that fateful day at the start of spring when Donnie realized what was going on. The genius had simply walked through the main room of the lair, intending on getting himself a cup of coffee when Leo had leaped over the couch, crashing into him, and pinning him onto the ground. Donnie tried to get the leader to release him when all Leo did was bare his teeth and growl at him. Something deep inside Donnie told him to freeze, to submit to the older turtle, and he did so, unable to withhold the whimper that had built up in his throat. At the sound, Leo's blue eyes softened and let out what sounded like a coo and nuzzled the side of Donnie's head. Before Leo could do anything else, a loud roar echoed through the liar and the blue banded turtle was thrown off of Donnie.
Donnie almost sighed in relief until he saw Raph. The red banded turtle had his own teeth bared at the leader, a deep growl worked his way through his throat as the two began to circle each other. It was then Donnie took a good look at his two older brothers. Both of their eyes were feral and showed no recognition of each other.
It took himself, Master Splinter, and Mikey to subdue them long enough to lock them in their respective rooms and for Donnie to take some blood. After a day of testing, Donnie horrifyingly told what he had learned, mating season. Both Leo and Raph were in their mating season and appeared to be dominants, seeing each other as a rival in the affections of a submissive.
To say Master Splinter was surprised was an understatement. He was completely livid at the two oldest and grounded the two youngest, as if they had decided how nature acted. It took a few days before the old rat had decided he couldn't control nature and it seemed like his sons would turn back onto their instincts every spring and fight for the submissive, Donnie.
Donnie had been terrified by that information. It appeared that he would be the object of his brother's affections every spring. Leo and Raph both tried to get at him during their mating season and it really scared the genius. And even to make the situation worse, it appeared that Donnie and Mikey would be going through their mating cycle along with their older brothers this upcoming spring.
Leo and Raph spent two weeks in their instinct driven state, trying to get out of their rooms, harming themselves in their need to get out to Donnie, and each had successful escaped once in that two week period. Raph was the first. He practically destroyed his door. His strength that increased with the influx of hormones in his system and he had found Donnie immediately and had pinned him to the ground. His green eyes were glazed over with lust and want and the older brother had nuzzled and cooed at the younger until he was dragged off by an annoyed Mikey. Leo had managed to duck out while Master Splinter was feeding him. He didn't get as far as Raph but the feeling of his fingers on his wrist still haunted Donnie, along with the intense blue eyes.
After two weeks, the two finally got their minds back and they were able to talk once more. Both had blushed and stammered as Donnie revealed what he had learned while they were taken over by instinct and horrified at what they had almost done to their peaceful brother. They also told Donnie what they felt prior to mating season. They both experienced a need to eat more food and high energy. Then came the aggression and finally, some kind of trigger that sent their conscious in the deep recesses of their mind. The two weeks were a haze to the two and nothing could bring anything clear, except for one thing, Donnie.
Donnie sighed again, shoving his pencil back across the desk, his thoughts plaguing him as this unsolvable problem presented itself. It seemed like all three of his brothers were dominants, alpha males, a many number of terms could be applied to them, and he was submissive to all of them. At first, Donnie didn't even realize it. His brothers would ask something and he would instantly do it, no matter what the present task was. It wasn't until Leo said something about Don needing to not drink as much coffee, did he realize what being submissive meant for him. After Leo's words, Donnie had set the mug aside and didn't touch it for the rest of the meal. Raph had given him a weird look and pointed out what had happened.
"Donnie! Dinner!" Mikey called out.
"Coming!" Donnie shouted back, rising to his feet to go eat, hoping that this problem would be able to be solves.
Author's Note: It's been a long time since I've been on here. Like years! Well, I'm hoping to be consistently on here more and here is the start to a new story. Reviews and constructive criticism are welcome. Flames will be used for cookies!