Disclaimer: As much as I wish to be a literary genuis and multi-millionaire like JKR, I sadly am not and I own none of this intellectual property, except Evan. But you can borrow him if you want...

This fic is SLASH and will get fairly graphic at points, if you don't like it or aren't of age, don't read it.

A/N: Thanks so much for the reviews guys! I love hearing from you. I sat down and wrote this entire chap and the next after looking at my reviews from Chapter 10. I really appreciate hearing from you!

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The head of Slytherin House was known as a choleric and unfriendly man to most of his past students at Hogwarts. It was hard to maintain that wall of indifference with his own house, as they look to him as a parental figure during their months away from home. Severus entered the common room in the Slytherin dungeons where he had asked his entire house to gather, and saw the upper year students who he had watched grow from innocent children to young adults. He had comforted many of them during their first days away from home, and made sure that he had an open door if they were struggling with classes, family issues, or, most often, the harassment of students from other houses. Slytherins protect their own. It is their mantra. The cool, collected Potion Master knew that there was a division in his house currently: light and dark, winner and loser, victim and perpetrator.

"Sit down, everyone. Welcome to our new students and those second years that I did not meet last year while I was on sabbatical. I am Severus Snape, your head of house and Potions Master to Hogwarts. You can ask your upper year students to confirm that I am strict, but my rules are fair, and I have the highest of expectations of Slytherin House. Do not get on the wrong side of my temper." Snape pointed to a seventh year student shuddering at a memory, "As Mr. Martin can tell you, it is not a pleasant experience and it usually only happens once."

He was in full dark, dangerous, scary professor mode, and Severus knew that he was putting the fear of God in the new students and hopefully some of the older ones as well. "My main rule is that Slytherin sticks together. We are the house that other students hate and often look at us with jealousy and malice. If you do not stand united, your time here will be painful, I can guarantee it."

Severus could see a group of students in the back of the room, all the children of known Death Eaters, glaring at him with contempt. "I know that many of your families were on different sides of the war, and some of you feel betrayed by me, but the war is over. We all need to realize that. Voldemort is no longer alive, and this house needs to move on." Severus glared around the room to emphasize his point.

"This is not a house of dark magic, no matter what other students may say. This is a house of strong, powerful witches and wizards who are crafty, intelligent, and well-connected. We are at our best when we stay together. Look around this room. There are only 49 students left in Slytherin if we add the 8 students who matriculated today, by far the smallest house due to the results of the war. I expect you to protect each other without question. If you are not supportive of your fellow Slytherins, you will answer to me. Regardless of what side you were on in the war, we are a family. Slytherin remains united." Snape let his dark eyes rake over the students seated around him. He saw the group in the back continue to stare at him in anger.

"Before I let you all settle into your dormitories for the evening, I have one last thing to say." Severus locked his eyes on the older students in the back of the room. "My family is off limits. Professor Potter and our son are not to be pawns in some revenge for the dark lord's fall."

David Dolohov, a 6th year whose father was killed in the final battle, scowled "You say that Slytherins always stick together, but where we you when our parents were being murdered, sir? You betrayed Slytherin for Potter." Dolohov spit out Harry's name like a disease.

Power prickled within Severus and he could feel his anger rising, his eyes intensified their glare at the clearly upset young man. His voice rose uncharacteristically with fury. "My alliance to the Order of the Phoenix does not defy any principles of my allegiance to my house, Mr. Dolohov. Slytherin is not a dark house or one that was uniformly aligned with Voldemort. Your parents all had different sides in the war, and I fought alongside many of them."

Severus felt his anger pique "Professor Potter, kindly remember to give him the respect that he does deserve Mr. Dolohov, is the most powerful and self-sacrificing wizard I have ever met. He will always work to protect the light and this school, Slytherin included, so yes I will continue to ally myself with him, regardless of our personal relationship. As for any anger you may feel personally towards Professor Potter, I would advise you to get over yourself. You will not win and Professor Potter doesn't take lightly to threats or assaults upon him or his family. As for me, if any of you so much as look at my son or his father in the wrong way, I am no longer your teacher or your head of house. I am a man who will not hesitate to protect what is his." Severus sneered and leveled his eyes around the room. He could see the goose bumps rising on the arms of the students. "Do not be the fool who puts himself on the wrong end of my wand when it comes to protecting my family."

"Now, I am dedicated to this house and all of the students in it. I will protect you as I protect my own son. If you need me, do not hesitate to contact me during my office hours from 3-5 every day or as needed. If I am not in my office or otherwise in the dungeons, just ask a house elf to contact me. They can quickly summons me from our family quarters. Are there any questions?" Seeing only fear and mild shock, Severus moved to exit the common room. "Sleep well, my snakes."

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Harry was already in bed when he heard the door open to his quarters. Evan had quieted down immediately after returning from the opening feast and had fallen to sleep deeply as soon as he was placed in his crib. The young professor wanted to spend some time with his beloved before the busy day that he knew would be coming tomorrow, the Sunday before classes were to begin. Harry planned on spending his Sunday continuing to work on his lesson plans and he knew that the fall out from Evan's big reveal was going to be tiring, to say the least.

Harry smiled at the dutiful head of Slytherin House as he walked into the bedroom. "You look pissed off, love. Which of your snakes angered you?"

Growling, Severus muttered "Dolohov."

"Yeah, David was always a bastard, even though I only remember him as a third or forth year. His father was scary." Harry shuddered dramatically. "I would like to remind Dolohov that his big bad death eater of a daddy was taken down by all 3' 8" of Filius Flitwick in the final battle."

Smirking at the thought, the tension in Severus' shoulders decreased slightly. "Just watch out for him, love. He and his little group of would-be death eaters are not going to bow down gracefully and accept that their parents were on the losing side."

"Merlin forgive the person who tries to hurt you or Evan, Sev. I have a hard time with restraint when the people I love are threatened."

"That's what I told them. I think most of them got the picture. I almost made a first year cry. I've still got it." Severus looked at Harry with unmistakable pride. Harry attempted to hide the chuckle that escaped his lips.

"Come and show me what you've got, baby. You make me hot when you turn into the dark, dangerous professor."

Pulling off his robes, Severus climbed on top of his lover. "As opposed to what? I would like you to know that I am always dark and dangerous...and do not forget terrifying."

Staring up at Severus, Harry couldn't help smirk in amusement. "I could never forget terrifying, my love. When you are home with us you are just...Papa. It is hard to think of you as the big scary dungeon bat when you are taking care of our son or making love to me. Sorry to say it Sev, but you may have become domesticated."

Feigning offense, Severus scowled "But do I still make you hot? Make you hard?" Severus latched onto Harry's neck and began to bite his sensitive skin.

"God, yes...feel how hard I am. I need you to fuck me baby. Hard and fast."

Teeth continued to bite down on the younger man's neck leaving harsh red marks along Harry's skin. Hands pulled off the Potions Master's clothes unceremoniously. Rock hard and impatient, Harry wanted his lover inside of him immediately.

Severus barely noticed that all of his clothing was removed, his tongue was too busy swirling around hard, sensitive brown nipples while his own potion stained fingers roamed Harry's toned body. Harry felt as if his nipples were hard-wired directly to his cock. Severus circled his tongue around one nub and blew a cold breeze of air that arched Harry's back and had him begging incoherently. Severus worshipped Harry's body; it had given his son life and gave himself indescribable pleasure. The older man's lips were making slow, wet trails along Harry's abdomen. Severus' dark head raised itself from Harry's body slightly and his eyes locked on Harry with undeniable lust just before plunging his mouth onto Harry's pulsating cock.

"Ahhhh...Sev...your mouth is amazing. Don't make me come like this though, I want to come with you on top of me deep inside my ass."

Growling at the thought, Severus moved his head off of Harry's shaft and reached into the drawer next to Harry's bed. Pulling out a tube of lube and coating his fingers liberally, Severus put his mouth back to work on the younger man's cock.

Harry's whole body was humming as he felt his lover engulf him in his mouth while a single slick finger teased his hole. He felt the finger enter him tentatively, getting through the tight ring of muscles easily and sliding in and out of him. "More Sev. I need more and quickly." A second finger was added and Harry felt a slight feeling of tolerable discomfort. The sensation was quickly washed away by the incredible feeling of Sev taking his sizable cock down his throat. Merlin he gives new meaning to the term deep throat. Harry was too lost in Severus' mouth to notice a third finger being added to his stretched hole. Harry whimpered loudly when Severus released his cock from his mouth with a pop. Beyond coherency, Harry moaned from deep in his chest and pulled his lover down into a seething kiss.

Without another word, Harry was entered swiftly and fully. Almost immediately he started seeing stars as his prostate was slammed. His legs were pushed up to rest on Severus' shoulders and Harry held on for the ride. His lover was over him looking fierce and incredibly sexy as he pounded into Harry's ass roughly. Harry preferred rough sex, despite the tender moments he loved to share with Severus. There was something purely erotic and masculine about a fast, hard, dirty fuck. It was what he wanted tonight and what Severus was giving to him in spades.

Both on the precipice of an incredible orgasm, Severus could feel his own balls constricting in response to the tight ass that clung to him with each thrust. He changed position just slightly and Harry's incoherent words of pleasure became louder. Harry's thighs tightened around Severus' body and he rocked further into the delicious pounding that his ass was receiving. "Ah...baby. I'm coming...fuck...come inside me baby. Come with me..."

As Harry's walls constricted around his cock, Severus emptied himself into his lover with a loud moan of completion. Feeling sated and slightly light headed, he collapsed on top of Harry. It took several minutes for Severus to come to again and realize that he was probably crushing Harry. They were both covered in a thin sheen of sweat and Harry's release was decorating their stomachs. With a quick cleansing spell, Severus pulled up the covers below their bed and curled his taller frame around Harry's blissed out body. "OK, Potter?"

"Never just OK, love. Incredible." Harry leaned back to kiss Severus sweetly. "But you're mine next time. I haven't been inside you in far too long."

"Perhaps that can be arranged," muttered the Potions Master. "As long as you don't get too used to it. I like you being underneath me while I make you scream."

Harry moaned and pushed himself back into the man wrapped around his body. "I will never not want that, Sev."

Severus' fingers combed through the Savior's hair, a surefire way to send Harry to sleep, and his thoughts drifted to how lucky he had become in the last year. So much has changed since that fateful night last June.

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