Chapter 1

"See if you sit back on your own heels, you can feel the either dense wall that seals off the channel or the rim of the channel if they're in full fertile heat or the soft thin wall of they're in infertile heat. Right now since Hizashi's not nearing a heat, his wall is thick and dense. It does still feel nice, doesn't it?" Aizawa explained to the young hero as he shifted his weight onto his butt which rested on his heels. He looked down at his husband who looked rather bored.

Hizashi smiled and nodded.

"Yep. Feels like when you get your feet rubbed." Hizashi said and Shinsou looked confused.

All of it was so confusing

He'd come to Aizawa, his hero course teacher and idol, for advice about how to knot. However Aizawa tried to explain to him but he'd called Hizashi and they decided to give him an in person demonstration. It wasn't uncommon to ask your 'guide' to physically show you how to knot or handle a heat. Most of the teachers were licensed guides for young adults or adolescents. However Hitoshi wasn't confident or brave enough to ask anyone else for help.

Now here he was, sitting in Hizashi's radio chair that they rolled over to the bed, paying attention closely as his teacher talked like he wasn't balls deep in another guy.

"Does it not- um does it not like feel like good? Like um arousing?" Shinsou asked. He'd gotten over being embarrassed when Aizawa had told him about Omega pre-heat purges and binges. (Omegas basically 'clearing their systems' and then eating all heat.) He'd tried to ask any questions that had come to mind.

"Not really. Now there's a spot a little- oof! Yeah there! A little closer to the entrance that feels really good!" Hizashi said and smiled a little breathlessly. As Aizawa pulled his hips back, dragging his cock along Hizashi's prostate.

"Everyone has that though. It's called your prostate and yes even alphas have them. They're similar to a female g-spot. It doesn't take much to hit it either. On either side of it are the slick glands so if your partner isn't slicking without a little encouragement, it's easy to stimulate with your fingers, or gently with just the tip of your penis. Usually if you want to tell them where it is, it's half way up their cock, and the size of their thumb." Aizawa explained and then showed Shinsou. Aizawa reached up and took both of his thumbs and placed them on either side of Hizashi's small cock, right in the middle.

Shinsou nodded, that was something he'd never heard about. He thought it'd be much… bigger. He'd watched a lot of porn and it always seemed like something that should be a large target of a sort.

"See even out of heat a bit of stimulus and they give. I'll bring you some wipes when we're done, sorry honey." Aizawa said as he reached down and gathered some slick that was starting to bead around his cock. He wiped his fingers, once showing Shinsou, onto his discarded underwear.

"It's fine. No harm no foul." Hizashi mumbled as Shinsou intently watched his hole. He noticed that Aizawa's cock was at a rather extreme angle, pointing up into Mister Yamada s hole and not…. Straight. Not just in.

"But what if it's too much pressure there? Like if you, hypothetically, have a kinda thin… skinny partner. Wouldn't it hurt their stomachs?" Shinsou asked. He knows his cock is big. Big for a seventeen year old. And well… if he was gonna share a bed with Denki… he didn't want to hurt his hopefully to be mate. Even through the muscles of Mister Yamada's stomach there was a bit of a bump.

"Well I wouldn't know. You know everything you say to us right now we will not hold against you or anyone else you mention." Aizawa said when he saw the panic on Shinsou's face. Shinsou breathed deeply for a second and thought it over. It's best to get all questions answered properly.

"Um… it's Denki Kaminari… we've been dating since I got to the hero course. We won't do it in the dorms! We got a place at a hotel… um but I don't wanna hurt him by doing.. that ." Shinsou said and pointed to where Hizashi was laying on his back with his hips pulled up to sit on Aizawa's. It was an odd position but he'd seen it in porn and he knows it's common.

"Oh yes, young Denki is quite thin. Perhaps not this position then. Hizashi can you just present for me please?" Aizawa said after thinking of it. The young blonde was NOT a person he thought the lavender headed boy fancied. But he understood, loud blondes are a type.

Hizashi pulled at where Aizawa was grasping his thigh and pulled.

"Yeah yeah, lemme have my legs." He said as Aizawa pulled himself out of Hizashi's wet hole. Shinsou thought that Mister Yamada would be a good guide for Denki. Someone who was thin and had lots of experience.

Hizashi rolled to his stomach and then got on his hands and knees on their bed. His back was straight for a moment before Aizawa rubbed his calf. Then his back dipped and arched.

' Wow… real presenting. I wonder how long they've done this…' Shinsou thought as he looked at how relaxed and calm they both were. They must have been guides for years now.

"This is usually what comes most naturally but if not it's easy to manipulate. Hands and knees at first. It's easiest to perform any foreplay and to stimulate the slick glands here. They can either be up on their hands, like this, or down on their elbows." Aizawa explained as Hizashi dropped down so he was down on his elbows, arms crossed in front of him. "Thank you Hizashi. When the actual coupling begins, you should be up either on your knees, some prefer to stand if they're quite a bit shorter than their partner, see how I'm not quite even?" Aizawa said as Hizashi yawned and rolled one of his ankles, relaxing deeper into the position. Aizawa moved to stand up on his knees and scoot to be in between Hizashi's spread legs. Aizawa had shorter legs than the blonde so the omega's hole was higher than his cock.

"Ye-yessir" Shinsou said . This was the position he'd seen the most. A breeding stance. If you wanted babies you did this. This was a baby making pose. He felt dirty being there while they were in this position. He almost laughed at himself because of the thought because it was so… childish to think like that. Everyone who got heat or rut was shown this pose and the meaning of mating and he was blushing like a cherry just seeing it.

"Easily fixed. Simply spread their knees out a bit more and that brings their bottom lower. If they get a bit uncomfortable because of how they're spread, offer a pillow to support. Or two." Aizawa explained and pushed Hizashi's knees with his hands so the other man's ass was a bit lower than his cock. He then pulled two pillows from the head of the bed to put under the omegas stomach and hips.

Hizashi let the cushions at his weight.

"Thank you." Hizashi mumbled and laid his head on his arms. It was nice laying here after a long hard day at work. His mate smelled nice and happy, his nest was clean, and he had just eaten dinner and showered. His alpha took such good care of him. Hizashi knew that young Hitoshi was a calmer, more timid young man so it was all the better if he himself stayed nice and calm. Lucky enough that was easy for Hizashi right then.

"It's your duty to make sure they're comfortable and that they also enjoy it. That's why it's so important to make sure they're slicking properly. If you feel them tensing or their slick glands start throbbing, immediately stop and ask if anything's wrong. Slick glands are usually extremely sensitive during heat. Most people will freely slick during heat but if they grow sore from nervousness during sex they can tear and that is… horrible. You never want to tear a slick gland." Aizawa explained and pushed himself back into Hizashi's wet hole, all the way over his knot. Aizawa rubbed at Hizashi's hip for a moment while speaking.

"Okay, um… Mister Aizawa?" Shinsou asked, amazed at the way Mister Yamada stretched so easily over Mister Aizawa's… huge knot.

"Yes Hitoshi? You can just ask." Aizawa said in a more teacherly nice voice. He was trying to make it easy for young Hitoshi to just ask any questions. He'd been a guide for a dozen years, and in his opinion Shinsou was doing very well.

"Um… I've never um I've never popped a knot before ." Shinsou whispered and leaned forward and looked at Aizawa's eyes. Hizashi almost awed, boy's usually popped their first knot during eighth, ninth grade. Not their fourth year of highschool. Shinsou's anxiety probably delayed him.

"Who's going to be your guide if you're at a hotel? One of the graduated students? Denki's mother?" Aizawa questioned. A first coupling and a first knot? No wonder Shinsou needed to ask for help. Usually an older friend or mother of the omega would be their guide.

Shinsou looked down nervously, picking at his hands.

"we don't have a guide." He mumbled. They knew they needed one but Denki's mom was busy and they didn't know any upperclassman or graduates that liked them or that they trusted.

"Hitoshi, you should know better. We're both licensed but we understand if you'd-" Aizawa scolded but was cut off by the young hero.

"Will Mister Yamada talk to Denki cause he's really nervous too but he wouldn't come ask for you to show him how to do this." Shinsou said quickly while looking down at where his teachers were still connected. It was strange being scolded by a man who was linked to his mate.

"Yeah. Yeah we'll be your guides. It's a great idea to have both an alpha and omega guide if it's your first knot. Give us a date, we'll have everything ready." Aizawa said after Hizashi nodded tiredly.

"Yeah, I'll help Young Kaminari. Now I am beat, so go talk alpha shit in the living room." Hizashi said and kicked Aizawa in the butt.