Disclaimer: I don't own Harry Potter.

Notes: This work will be mostly about sexual themes on the darker side, such as domination and manipulation. If you don't like such themes, you shouldn't read them. And lemons, lots and lots of lemons. This story will contain dark themes like killing and rituals.

(Re-edited)

(Marvin Robin POV) (The kid who was imperious in chapter 6)

I was suddenly overcome by a feeling of euphoria as I was shopping for new books. From that moment forward, all my worries and thoughts were erased, leaving behind only a vague and untraceable command to find a cabinet once I arrived at Hogwarts. Following the order, I acted as normal, pretending to be absorbed in my books.

Once the school year started, I began searching for the cabinet in my free time. It took me two weeks to locate it on the second floor. My next task was to make the elves move it, so I cast spells in front of the cabinet, pretending to be practicing. When an elf appeared, I asked them to move the cabinet.

"Hogwarts House Elf," I called out.

"Yes, sir, how can I help you?" the elf replied.

"I'm practicing spells here, but this cabinet is in my way. Could you move it?" I asked, feigning frustration.

"Oh, I'll do that right away," the elf said, and took the cabinet away.

I practiced spells in the same spot for an hour or two, making sure not to raise any suspicions. Then, I resumed my classes and acted normally.

A month later, on a weekend, I sneaked up to the seventh floor, pretending to be exploring. When I reached the portrait with the dancing troll, I imagined a room filled with lost and found items and walked around the picture three times. After that, a door appeared.

I opened the door and spent the rest of the time searching for the cabinet. When I found it, I opened the cabinet door and made contact with the person who had given me the orders through the mirror.

(EndMarvin Robin POV)

(Sirius POV)

It has been three weeks since I spoke with Bella. I have increased her meal frequency to help her regain her health and become grateful to me. I have also spent the rest of my time enhancing my magical skills and learning how to use my new physical advantages in duels. I now have a fast reaction time, improved dodging speed, and a high endurance to perform magic continuously.

While reading in the library, I received a vibration from my magical pouch, which was from my Imperiused Hogwarts student. After seeing the student's face in the communicating mirror, I was informed that the object was transferred to the Come and Go room.

With my wand ready and a prepared portkey in case of a trap, I went to my office and opened the cabinet door. I saw the student standing there with the mirror and, after making sure there were no hidden people, I stunned and obliviated him, then rewrote his memory about recent events. I then made myself and the cabinet invisible and renervated the student.

After the student left, I explored the Room of Hidden Things and found the Rowena Ravenclaw Diadem. Despite the anti-summoning charm on it, I was able to find the diadem with my wand's pointing spell. I dispelled the ward, placed the diadem in a magical-resistant box, and stored it in my pouch.

Next, I tried the Room of Requirement by imagining a training area and a library for charms. I was pleasantly surprised to find that my imagination had created a room with a library and a circular arena for target practice. I picked up a book, "How Charms Wins Battles," and started reading while seated on a comfortable leather sofa.

~2 Later months~

(Bellatrix POV)

This new Sirius had changed dramatically. He started to take care of me, providing me with food, baths, new clothes, and even health regimen potions, all in the name of reviving the Black Family. Despite his previous hatred for the Family, he now seems more mature and carries a menacing presence.

However, sometimes he makes foolish decisions, such as this one. As I looked at Sirius, who stood determinedly before me, I mocked him, trying to extract information from him.

"Hehe, Sirius, you're so foolish, handing me a wand so we can duel. I'm supposed to be a prisoner. Did you get cocky because I don't have a perfect matching wand, or are you delusional? I won't kill you just because you were nice to me."

I saw a moment of hesitation on his face before it became focused. He replied, "I don't have a matching wand either, so we're both at a disadvantage."

"By the way, I wanted to let you know about my research. I found out about Voldemort's background. He's the result of a squib Gaunt and a muggle mating. A half-blood, isn't that another hole in your philosophy?"

"But enough talking, let's start!" I shouted.

The news of Voldemort's background didn't shock me much, as the upper echelons of Death Eaters already knew there was something suspicious about Voldemort's past. Nevertheless, the revelation that he was the product of a squib and a muggle still made me snap.

My magic began to boil, and I looked straight into Sirius' eyes and grinned at him. I started with a blood-boiling curse in my favorite spell chain. He deflected it, but I wasn't done. I unleashed every dark curse I knew, including a bone-shattering curse, a cutting curse, a dark compression curse, and an electric torture curse. I dodged to my left as Sirius started transfiguring weapons and sending them towards me. I quickly cast a blazing heat spell, which he doused with a streaming water spell.

The spells exchanged between us destroyed the dueling pit. Sirius cast damaging attacks, while I cast maiming, torture, or killing spells. I was amazed at how much Sirius had changed and how talented he was. I wasn't surprised by his repertoire of spells, but I was taken aback by his use of elemental magic, Transfiguration, and Charms in the duel. Despite my best efforts, I couldn't hurt him.

Ducking another spell, I laughed at the realization that the black sheep of the Family had returned. I focused on the duel because I was losing. I fell into a rhythm, casting as I moved, ducking, and shifting my stance to avoid his attacks. He transitioned from one spell chain to another, but I fell back on my instincts and continued to cast as quickly as possible, my darkest spells rolling off my tongue. I felt free, and all the frustration of being used, left alone, and imprisoned was forgotten. My magic was rumbling as I remembered my days in the dueling circuit and during the war.

Frustrated that I couldn't harm Sirius, I put all my hate and misery from the past years into a final Killing curse. "Avada Kedavra!" I shouted. He intercepted the spell with a block of rock and fired a disarming charm. As soon as my wand left my hand, I fell to my knees in exhaustion. Breathing in and out, I saw how at ease Sirius was.

"You've become very powerful. I couldn't even make you go all out," I said.

He shrugged and said, "I've had a long time to recover, and you're still not at your peak."

He approached me and offered his hand. "Bella, I need you on my side. The Family needs us to stick together. Trust me, I'm not asking you to be subservient to me, but to be my equal."

I gazed at his hand and considered his offer. Even if the Dark Lord returned, what would prevent him from losing again? His invincibility was shattered by a mudblood and her half-blood child. My instincts told me that this time, Sirius would be the one to defeat him, just as they had previously told me to follow Voldemort.

I asked, "Will you abandon me?"

Suddenly, magic burst from him, enveloping him in a red aura that spread to me. I could feel his magic, his strength, his determination, and his conviction as he replied, "Never!"

I took his hand and clasped it.

Warning: Incest

(POV Sirius)

As I gazed at our joined hands, I smiled at her. Although she didn't seem to notice, I was immensely relieved that she had become exhausted. Despite her healthy and vibrant appearance, years of malnutrition or starvation cannot be fully cured in just a few months unless one performs powerful rituals like I have. Although I acted as if I was unfazed, this was my first magical battle, and I was naturally nervous to face one of the most skilled dark arts witches of this era.

Helping her to her feet, I guided her out of the dueling arena and into the recently built bathroom. I had added a sauna and a large bathtub for her comfort. As she took in her surroundings, I could see her curiosity pique. The elves had done an outstanding job in cleaning and renovating the home to my desired style, a blend of Victorian and modern. It was a stark contrast to the once-dreadful place. Judging by her expression, she seemed to approve of the changes. I took the opportunity to elaborate further.

"I redesigned the layout to suit my style, a new look for a new beginning."

"Hmm... It's not exactly an improvement, but it looks much more appealing compared to the walls of Azkaban. By the way, where are you taking me?"

"Oh, to my favorite spot in the entire house. It's a surprise."

We engaged in small talk, mostly me talking about the house. As we approached the bathroom, I opened the door and entered, with her following me.

The bathroom was a blend of Japanese and Western styles. The Japanese side had a wooden floor, while the western side was made of marble. Bella looked around, touching the modern sink and contemplating.

"Hmm... This isn't the typical British style."

I lied easily, "Yeah, Lily used to talk about different styles when James was decorating the house."

She didn't comment further and changed the topic.

"Still, you know it's not polite to drag a lady to the bathroom after a hard and grueling session. Does little Sirius want to have some fun with little old Bella..."

When she turned around and saw me, I was already undressed. She was speechless, and I could understand her reaction. Even for me, it was hard to get used to my new appearance. I was the embodiment of Adonis!

"Gulped!"

She gulped, but her eyes were down on my crotch.

As my rippling form neared her, I smiled,

"I thought a shower and a clean-up before a big meal would be good."

We were adults in our late thirties; both experienced and had a lot of pent-up desires. I was pretty horny, and she was frustrated too. Though I am not hundred percent sure, maybe she would curse me. That would make it pretty awkward. She quickly gathered herself and smiled cooly. I knew I was in for a good night and was losing my virginity in this life.

She undressed before my eyes. She had transfigured these clothes when I gave her the wand.

While she stared into my eyes, she unbuttoned her robe, which beautifully hugged her body. Underneath was a white, sticky vest due to the sweat. It created a delicious sight with her black bra underneath. All while undressing, she stared right into my eyes. At the same time, I appreciated the show.

"How is it, my ickle cousin... How is my body compared to those of low breeds?" With a sneer, she took off her vest.

I looked over her breast; they weren't overly huge but were of the perfect size. They were begging to be mauled.

As soon as she was in her black bra, she turned around and tugged her trousers down. As she bent over, I saw her big fat ass, usually hidden in her robes. Even her underwear couldn't hide the globes.

She turned around again and stood just in her undergarments. She was truly a beauty, most probably a combination of magic and genetics. And with her curly hair, she looked like a wild lioness, ready to be tamed.

She snickered at me and said, "Black got your tongue, eh Siri?"

Turning around, she went to the bathtub; while swaying that ass.

The whole situation aroused me; I was already at full mast. Following behind her, I activated the runes for the bath, which filled the tub with lukewarm hot water. As she reached the tub, she put one leg in the now-warm water and slowly took down her underwear. Twirling around, she unhooked her bra, and the witch's bountiful buxom breasts were now free. They remained pretty perky with minimal sag. They sat on her chest perfectly, a testament to her exquisite body. Dragging my eyes down, I saw liquid dripping down her legs. Leering at her all this time, I was quickly getting impatient.

Walking towards her, I grabbed her by her waist as she squeaked, hoisted her up easily, and got into the bath.

"hehe, someone's in a hurry to get little Sirius wet."

"Nah, I am just hungry; we gotta wash you up and get to dinner."

"Whatever you say, big boy."

Lathering my hands up on the foam, I bring them to her supple breast and squeeze them.

"nhhha

She groans, and I feel her tremble. Flicking my fingers on hardening nipples, I feel her mash her shapely fat ass on my hard prick. One of my hands stays on her breasts while drawing circles around her areola. While the other spread the foam and washed it. Whenever my hand passed a specific part of her body, and she trembled, I knew it was a sensitive area for her. I memorize those areas for later sessions. Right now, I focused on washing her body, then took my other hand from her breast. I washed her hair thoroughly, all while she kept rocking her ass on my hard-on.

"Uhhhh.. you do know how to treat a lady...right there."

Resisting the urge to shove my cock up her arse, I groaned a little and massaged her scalp.

"Well, Hogwarts is a great learning place for all studies."

I lied here; as much as Sirius looked like a playboy, he only had 3-4 sexual experiences while one serious relationship. Most of my knowledge came from my previous life on how to please a lady.

She cooed a little bit before biting back a reply, "like seducing your cousins, was ickle Sirius getting off on incest."

"No, mainly taught me to grab every opportunity my way."

After washing her hair, I pick her from under her thighs and rotate her so she faces me. Watching her slightly sweaty rosy face while her gaze was full of arousal and lust. Cupping her face, I go in for her full pouty lips. As her tongue dueled with mine, my hand wandered back down to her ass. Cupping them and molding them to my desire causes her to moan in my mouth. As she forces my tongue back, she pushes my back a little, then straddles me.

Freeing from the kiss, she says

"Tell me what a proper pureblood lady feels like !"

After that, she bounces down on my cock, taking it in the entire thing inside.

"FUUUUCCCK, what fucking ritual did you DOOO, ITS SOOOOO BIGGGG!"

I wasn't surprised that she found out about the ritual. I would think she was stupid if she didn't pick up on it. How can food and potion change a person this much? Only rituals could.

Ignoring the comment about the ritual, I palm her ass and take out my cock, only to bottom out again, which made her shudder. I slowly start to piston in and out of her.

Yeah, another added benefit of the ritual was a big ding-dong. Groaning, I felt the vice-like grip on my cock. Her face was full of pain and pleasure.

"SPlash splash"

The water around us splashes due to our copulation. Leaning down, I take her nipples and suck on them.

"Fuccck, your immature, sucking on your cousin's tits...ugghhhh...speed uppppp"

I pick up the pace and start hammering her cunt, my cock knocks on her cervix, and I feel her juices coating my dick. She shudders as she cums. Her vice-like grip makes my cock twitches before I unload my seed in her.

She hugs me tightly and starts moving up and down to milk me completely.

Breaking the hug, she looks at me.

"Hopefully, you got more in you, lover boy because I am still pent up."

She looks so lovely saying such words; I grab her hair and shove my tongue down her mouth. The ritual made boosted my endurance to insane levels, which in turn made my libido insatiable.

Sucking on her tongue one last time before I push her pouty lips downwards, and I feel a warm sensation on my cock, as she sucks on our mixture of juices.