You're a late bloomer at nine sweeps, and you don't yet have a concupiscent quadrant filled. This leaves you alone and self-pailing for the duration of your mating cycle—at least, that was the idea. When Karkat bursts in on you, it sort of throws off your plans for the week.

When Steve and Tony wake up to find that they've been captured, they assume things can't get any worse. They're wrong.

After being tortured by a group of hunters, Derek goes into heat. Stiles helps him through it. Written for the 24-hour porn challenge community, Stop, Drop, and Howl.

Sometimes the other Vulcans wonder how Spock managed to obtain such an exotic bondmate, and sometimes Spock wonders himself.

Just because an alpha can go through rut alone doesn't mean he should. "Okay." Lance's palms were sweaty with what he was about to say. He was about to break so many rules. "Cards on the table, guys. We got any omegas sitting here?"

Obviously this was all the fault of Katsuki's perv classmate and his aerosolized heat trigger. Once Katsuki gets his life back under control, everyone will forget all about this moment of weakness. Nothing will change. He won't let it change. After all, he's going to be the number one hero one day. Just because omegas never go pro, that doesn't mean it isn't possible, right? ...right?

They think it will be funny to leave him with a Galra in heat. It whimpers. It's a sound of pure pain, one Shiro's heard a hundred times now in the arena. The sound of something wounded and helpless; the sound of something that knows it. "Are you hurt?" Shiro asks in the bare silence of the cell, and moves a few steps closer. The creature on the floor twitches violently at his voice. It's not dressed like the other prisoners. It's hard to tell in the poor lighting but the back of its skin-tight suit is glowing in circuits, the same purple he's come to associate with the Galra. "I won't hurt you," he says, softer. It doesn't make a sound but its back arches, head lifting from the floor, dragging black hair along the floor. It's dripping wet with blood or sweat. Shiro realizes the small sound he's barely been registering is breath—it's panting. It rolls, just enough to eye Shiro through its dark bangs. He. It's a boy, and he's beautiful.

As a twisted gift for the sworn brotherhood of Nie Mingjue, Lan Xichen and Jin Guangyao, Jin Guangshan slips heat triggering poison into his son’s tea. It has the opposite effect than he hopes, and instead of isolating Jin Guangyao from his sworn brothers, it deepens their bonds, making Jin Guangyao finally decide on whose side his loyalty lays.

Not long after his confrontation with Bruce and the Joker, Jason crosses paths with an angry Poison Ivy. She accidentally triggers his heat before leaving him for Robin to find. Still scared and angry about the incident at Titans Tower, Tim has no choice but to help Jason work through his heat when it turns out that he's been abusing suppressants and could very well die without an alpha to help.