Oh dear…it's happening again. I've felt fic ideas welling up inside me for the past several months, waiting impatiently for the opportunity to write them. Well, despite other priorities that probably should be higher on my list, I've reached my limit. I have a desperate need for more ZamaBlack, and since there're still very few fics of this godly duo out there, it's my sworn duty to make more. It's a dirty job, but somebody's gotta do it.

Since I spent far more time mulling this one over than the previous fics, it's developed from a one-shot into a multi chapter story. Which means, yay more content, but boo, don't know how soon I'll be able to write the other chapters :/ I have an abysmal record with making timely updates on multi chapter fics, but here's hoping I can keep my momentum going this time and at least write another chapter by the end of the year.

Chapter completed: 2017.10.01

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Chapter 1: Pleasing the Gods

As they traversed the universes seeking out worlds with mortal life in need of purging, Black and Zamasu had developed a tradition of sorts. It started innocuously enough when, after they had completed cleansing their first planet together, a moment of celebratory elation inadvertently turned passionate. Thereafter, every time they finished an eradication, they would commemorate their achievement with spirited lovemaking. Though at first they would get intimate wherever they happened to be when they finished, it was soon mutually decided that they should use only the most picturesque location on each planet. In their shared opinion, this elevated it to ritualistic status, their divine union bestowing a blessing upon the newly purified planet in the most beautiful way imaginable.

They arrived at one particular planet, though, that had already been divested of all of its natural splendor. A sickly brown-gray haze spread across the sky in all directions, looming ominously over a landscape dotted with stumps marking areas where life had once been abundant. Rivers cut through the parched landscape, but they flowed with debris rather than water. Numerous scattered ghost towns filled with abandoned housing and factories suggested that the once flourishing species here may have already died out, but Black and Zamasu could sense mortal energy signals emanating from one area of the planet.

Once they tracked down the last holdout of civilization, they looked down with disdain from where they hovered above it in the sky. There was one opulent, dome-topped building sprouting up from the center of a disarrayed assortment of run-down hovels. At this closer range, they could determine that there was a clear divide between the handful of stronger energies inside the structure and the thousands of weak ones coming from the surrounding slums. Which, based on their knowledge of scenarios that commonly played out in human societies, meant there was likely a small group of rich, powerful mortals that had taken advantage of the masses, living in luxury while their subjects starved. The exact history of this species meant nothing to them, though; soon it would be gone and forgotten, giving the planet it had infected a chance to heal.

Zamasu's lip curled in disgust. "This is…atrocious. They've destroyed all of this planet's natural wonders, and for what? They're so focused on their own greed that they don't even realize the damage they've done to this world. It's truly…revolting," he spat, now visibly seething with rage.

Though they shared the same mind, Black had had a bit more exposure to the horrors of humanity than his future counterpart, and thus was less affected by their atrocities. He put an arm around Zamasu to comfort him. "This is just further proof that we're doing the right thing," he stated softly as he pulled him closer. "The Zero Mortals Plan is necessary because this is what they always do. No matter how civilized they may seem, they'll all reach this point eventually. Which is why we need to stop them before it gets this far whenever possible."

Zamasu met his gaze and nodded. Though he looked more composed, there was still substantial anger gleaming in his eyes. "Then let's waste no time getting started."

"The strongest ones are inside that building, though this species is so weak none of them can challenge us. We can split up and get this over with more quickly, so—"

"I'll deal with the ones in there. You take care of the rest."

Black was a bit surprised at Zamasu's insistence on killing the stronger mortals of this world, since usually he was content to leave that task to Black. Clearly the abysmal state of this planet had upset him so much that he wanted to be the one to take out those most responsible. "All right. We'll meet up after we finish. And I'll try searching around, but we'll be hard-pressed to find a suitable spot for our usual custom in this wasteland."

Zamasu looked baffled at his partner's suggestion. "This place is so appalling, I can't imagine we'll be in the mood for that when we're done." He flew off, leaving a stunned Black behind. He had not expected Zamasu to be this disturbed by the situation, to the point where he even denied the possibility of their sacred ritual. He smirked to himself. Surely he could convince him otherwise…

Zamasu approached the sole structure rising up from the dregs of humanity, finding it even more monstrous up close. The outer surface shimmered, looking as if some sort of precious metals were a part of its composition. There were evenly spaced lines in which jewels had been embedded into the walls, though in the areas that were closer to the ground, many of them had been picked off. Menacing walls and fencing surrounded the area, but some sections had collapsed or been cut through, so it seemed the mortals in power had somewhat lost their ability to keep the undesirables out. However, some that had made it in never made it back out, as the area inside the border was littered with corpses in varying states of decay. All appeared malnourished, and many were still clutching whatever goods they had managed to pilfer in their last ditch effort to survive. Mortals killing each other in this manner did not particularly bother Zamasu, as it helped to move their plan along quicker, but the sheer audacity of this establishment to take all of the planet's resources for themselves and hoard them away was simply unforgivable.

He floated down to the entrance and blasted his way through the thick doors. Some creatures came toward him, babbling and brandishing weapons, but he calmly formed an energy blade with his hand and sliced them down effortlessly. Once they all lay dead, he looked around the grand entryway and felt absolutely nauseated as he took in the interior décor. All of the nature that was absent outside seemed to have made its way into this very building. Trees, plants, flowers, every sort of greenery imaginable was displayed all around the hall. None were living, though; their dried corpses were merely being used as decorations, and many had the same metallic sheen and encrusted jewels as the exterior walls. This sickening, disrespectful display made his blood boil, and he flew up through the ceiling to unleash his fury on whatever unsuspecting vermin were waiting on the next floor.

He continued his way upward floor by floor, easily taking out all he came across with quick swipes of his blade. As he went higher up, the creatures grew fatter and the décor more ostentatious. By the time he reached the dome-roofed top floor, Zamasu was breathing heavily not from the effort he was exuding, but from his intense wrath. This final room had a different setup than the others he had seen, with circular rows of seating facing a raised, centrally situated platform, which itself was encircled by tables and shelves filled with various objects. From what he knew about human cultures, it looked to be some sort of hall of worship. He chuckled humorlessly. This appeared to be the most significant place in this establishment, so were all of the grotesqueries he had witnessed thus far the doing of some sort of authoritative religious sect?

He approached the only creature that was present. It was the fattest one he had seen yet, and was clothed in a ludicrous robe spun mainly from threads of gold, with panels of iridescent rainbow-colored fabric woven throughout. It cowered on the floor as Zamasu came toward it brandishing his blade, but he dissipated it as he approached. "Are you responsible for all this?" Zamasu accused, gesturing his arms out to indicate not only the building but the entire planet. "Are you proud of this? Satisfied at the devastation you've brought upon this world to nourish your own greed? To see such beauty utterly wasted and abused by scum like you makes me sick. It could take decades, even centuries for this world to heal from the damage caused by you pathetic, worthless sinners!" He took a deep breath to compose himself. No need to get so bent out of shape for a meager pest such as this one. "We're fixing that now, though. Correcting the mistakes of gods and mortals…by eliminating them and bringing true justice to all worlds," he finished with a deranged grin.

The frightened creature took one of the holy objects from the shelves, grasping it firmly and chanting. Zamasu could not help but laugh heartily at the display. Once he regained his breath, he inquired snidely, "Who do you think you're praying to? Unfortunately for you, the only god remaining…" He formed his blade again with a wicked smirk. "…is right here in front of you."

It frantically babbled what sounded like pleas, and began pulling assorted items from the shelves and offering them to Zamasu. He glared and backed away to keep the foul thing from touching him. "Bargaining won't do you any good. No matter what, your reprehensible species is going extinct today." As the creature continued gurgling in a language Zamasu could not decipher, he cocked his head curiously. "Can you even understand me?" He shrugged with a chuckle. "It hardly matters. Who am I kidding, this speech is more for my own benefit than anyone else's." He raised his blade slowly. "Now, then…"

Before he could bring it down, something grabbed onto him from behind. At first he thought he had failed to kill some vermin and one of them was attacking him, but the being started kissing the back of his neck, and a familiar voice purred in his ear, "You ready?"

Zamasu went from coldblooded to flustered in an instant as he felt Black's erection pressing against his backside. "A-as I'm sure you can see, I'm still dealing with the last of them."

"So just kill it already." Black ran his hands smoothly up and down Zamasu's arms.

Zamasu was trying to keep himself from getting worked up by Black, though he could already feel arousing tingles shooting through his body. "I…I was just lecturing this pest on why despicable species like them need to be wiped out."

"Who cares? It'll be dead soon anyway, joining the rest of its miserable kind. Most of the ones out there were already close to death. Really, it was like giving them a mercy killing they didn't deserve." A hand drifted down to caress Zamasu's rear. "After that, I'm ready to go," he chuckled as he gave it a light slap.

"I thought we agreed this place was too horrifying to even consider that," Zamasu protested irritably.

Black shrugged. "You may have thought that. This body disagrees. The very act of killing them gets it…excited. And perhaps because this planet is so awful, it's our duty to bless it extra hard, don't you think?" he thrust his hips forward for emphasis, causing a small gasp to come forth from his partner.

Zamasu was still trying mightily to resist being seduced. "You really should try to rein in that body's barbaric tendencies. Otherwise, you risk completely losing all sense of godly refinement. Honestly, sometimes I hardly recognize myself in you anymore…"

"What's the matter? Have I become too…" Black reached around and ripped a large opening down the front of Zamasu's jacket and shirt, exposing his chest. "…savage for you?"

A slight moan and steadily reddening ears betrayed the fact that Zamasu was getting turned on, despite his best efforts. "I-I…mmm…" he stammered in his attempt to reply, as Black began sensually licking the sensitive skin on the back of his skull.

During this exchange, the creature attempted to slowly sneak off while they were distracted by each other. "Your prey's getting away. You gonna finish it off? Or would you like to make it watch?"

Zamasu was offended at the suggestion. "Absolutely not! Mortals are not worthy of bearing witness to our sacred ritual."

"Then hurry," Black pleaded in his sultry alto timbre, pressing his lips directly against Zamasu's ear.

The creature had made it far enough across the room to try to make a run for it. It was stopped dead in its tracks as Zamasu fired a blast that blew its head off.

Zamasu was whirled around by Black, the two immediately smashing their lips together in a sloppy, desperate manner, completely devoid of the perfect synchronicity they typically shared. Black pushed forward until Zamasu slammed against the table, rattling the adjoining shelves and knocking over many of the so-called holy objects they housed. As their hands groped each other's bodies, Zamasu noticed Black's clothing felt different than it normally did. He tried to move his face back to look at him, but had difficulty as Black kept pulling him in closer. "What…are you…wear…ing?" he managed to ask, his words being interrupted multiple times by persistent kisses from his partner.

"Oh, this?" Black grinned and backed up enough to give Zamasu a view of his whole body. He was clad in the same style of robe that many of the creatures in the building had been wearing. This particular one consisted mostly of rainbow toned fabric trimmed with royal blue and flecks of gold around the edges. Though the beings of this world had worn it as an outer robe with other layers of clothing underneath, Black was wearing nothing else. The entire front of the garment was lined with jeweled buttons, but Black had only fastened a couple of the ones near his stomach, allowing his chest to be exposed and his erection to peek out. "I took it from one of the bodies on my way up here to find you. I think it's quite beautiful, don't you?"

The sexy smirk Black shot at him was utterly irresistible, but Zamasu could feel nothing but disdain for anything created by the citizens of this planet. "O-of course you look beautiful, but…" He was silenced as Black crushed his lips against him again. He pushed his hands into the gaping opening in Zamasu's clothes and tore the remains of his shirt and jacket away. Black then dropped to his knees, grabbed onto Zamasu's pants, and ripped them from his body, leaving scraps of fabric sticking out from the top of his boots.

Black took hold of Zamasu's hardened member and leered up at him. "Thought you weren't into this today?"

"W-well, obviously you can convince me…ah!" He gasped as Black took him into his mouth, circling his tongue around the tip. He gave it a few shallow thrusts while working the shaft with his hand, before switching over to kissing and licking up and down the entire length.

Once he felt he had doled out a proper amount of teasing, Black stood up and spun Zamasu around, bending him over the table. "Have you prepared yourself?" With his godly powers of creation, Zamasu could conjure up his own special lubrication and have it appear wherever he needed.

"Yeah." He reached back and spread his ass cheeks to reveal his opening, already slick and glistening. "See?"

"Good. You're gonna need it."

Instead of the welcome sensation of warm cock he had been anticipating, Zamasu shuddered as something cold and hard was jammed inside him. "Wh…what is that…?!"

"Don't know. Some sort of glass sculpture from this shelf here. I'm sure the mortals made these offerings to please the gods, so…" he leaned forward and put his mouth near Zamasu's ear with a provocative chuckle, "…let's see how well they can pleasure you." He worked the glass object in and out of his partner. "How does that feel?"

"N-not good," Zamasu cringed. "I d-don't…" Before he could finish his objection, Black tossed the first object aside and inserted something with a rougher, straw-like texture.

"How about this one? Doesn't look very comfortable, but I know you like a little pain."

Zamasu could feel the skin inside of him being torn and instantly healed from the scratchy surface; even increasing his inner lubrication could not get rid of the sensation. And though Black was correct in that he frequently enjoyed it when their lovemaking was liberally spiced with sadomasochism, at this time he was not at all in the mood for the way his other self was carrying it out. "It's awf—" He was cut off as Black wrapped a beaded necklace tightly around his neck.

"What's that? You don't like it?"

"This…isn't…what…I want…" He managed to speak in short spurts as Black repeatedly slackened and retightened the necklace.

"Ah, so you want something different? I get it." He removed the second object and pushed the necklace up inside him. He left a small loop sticking out, which he hooked his finger through and tugged at gradually, allowing each bead to pop out one by one. "Is this more like it?"

Zamasu let out a frustrated growl. "I don't…ah! Want any of these…ngh…" He flinched each time a bead was removed. "I only want…mm…you. No more of these…f-filthy human-made objects!"

Black snickered as he yanked out the remainder of the necklace. "No more human-made objects? You sure?" He positioned the tip of his erection flush against Zamasu's asshole. "Not even this one?"

Zamasu glanced back over his shoulder, flashing an inviting smile. "I suppose…there's one exception." His face lit up even further as Black pushed forward and entered him. Moaning with delight, he gripped the sides of the table and thrust himself backward in time with Black's strokes. Zamasu felt leery when he felt Black move to grab something off a shelf, but was relieved to see that it was merely a candle. He lit it with a flick of his finger, then brought it to Zamasu's chest and pressed the flame against his nipple. Despite his demand for no man-made objects to be used on him, he was actually all right with this since the flame was the source of the painful pleasure he received from this.

After singing his nipples for a bit, Black moved the candle downward and held it against Zamasu's dick, letting the flame flicker against the tip. Zamasu bit his lip, reveling in the invulnerability that allowed him to endure this sensation without suffering any harm. The speed of Black's pumping increased, nudging him ever closer to finishing. When he felt his partner's ejaculate erupt within him, Zamasu was also pushed over the edge, tossing his head back as he climaxed.

Black chortled as Zamasu turned around to face him. "You put my candle out," he leered, licking cum and melted wax from his hand.

Zamasu looked at him with a tight smile. Of course he knew Black had done all of this with the best of intentions, but he was still peeved that his partner had not realized how truly distraught this world and its mortals had made him feel. With a wave of his hand, they were both clad in their regular attire again. "Let's go," he said flatly.

Black could tell Zamasu was not happy with him. Though they shared the same soul, it was clearly a mistake to assume they always thought alike. The sullen expression Zamasu was wearing troubled him—especially knowing that he was partially to blame for it—and Black wondered what he could do to make his other self feel better. Though after exterminating humans from a planet they typically left their structures behind to rot away and be reclaimed by nature, perhaps it would be cathartic for Zamasu if they destroyed this place. "Do you want to…?"

Zamasu nodded. "Burn it to the ground." Now they were on the same wavelength again. The pair blasted a hole through the top of the dome and floated upward. They unleashed matching firestorms, setting the building and surrounding slums ablaze. As they stared into the flames, they each reached out a hand toward the other wordlessly, interlacing their fingers tightly together.

Once the thick smoke and stench of burning flesh became unbearable, they loosened their grip and faced each other. "Shall we go then?" Zamasu suggested.

"Yeah."

After they teleported back to their home base in the realm of the gods, Black could still feel an uncomfortable tension between them, and he wanted to do anything he could to get rid of it. Though it felt very strange to apologize to another version of himself, perhaps it was necessary in this case. "I…I'm truly sorry about what happened. I should've seen how deeply that planet was affecting you. We're kindred spirits, so I assumed our feelings might be just a bit different sometimes, but not that far apart. I was wrong about that."

"It's fine," Zamasu snapped in a tone that indicated it obviously was not. "Inhabiting an impure human body like you do, it was only a matter of time before it started to sully your mind."

Black raised an eyebrow. This was taking an unexpected turn, and he was not quite sure how to respond. "I took this body because I needed its power to cleanse the universes. I knew there was a risk I could be influenced by its primitive nature, but I was willing to make that sacrifice for the justice we both believe in. That will never change. And if it does, if I ever truly become a victim of my own body, then…you know what to do." They came to the decision early on in their partnership that, if Black's body's humanity ever became an obstacle, it was up to Zamasu to make sure they fused into a single being before it was too late. Bringing up this agreement caused his irritated expression to soften into a sorrowful one, and Black could not help but envelop him in a soothing embrace. "But I won't let that happen," he murmured gently.

"I hope so." Zamasu felt himself calming down as they stood with their arms wrapped around each other, though his mind still swarmed with negative thoughts. Nothing was more distressing to him than the possibility of losing this bond someday, and despite Black's assurances, it was difficult not to believe that it might be inevitable. He could only hope that the emerging differences between them were not a sign of worse things to come.

Black broke off the hug and put his hands on Zamasu's shoulders. "You want to rest a bit before we head to the next planet?"

"Yes. After the last one was so…trying, I'd prefer to wait a while." He was grateful that in most circumstances the two of them understood each other perfectly. And Black's earnestness made Zamasu want to forgive him. Still, there was also a very petty part of him that sought revenge for the degrading way Black had chosen to execute their divine blessing. He narrowed his eyes and shot Black a slightly sinister, mischievous smile. "And next time, I'm picking the place."

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Woo hoo, first chapter done for my first multi chapter Black/Zamasu fic ^_^ In previous stories, I've written both kinky and sappy versions of the these characters, and this time around is turning out to be a combination of the two. Will do my best to keep chugging along with this, but life can be a bitch sometimes and bother me with "responsibilities" that aren't nearly as fun as fic writing :/ But I'm doing this for the universe, for the world! And will hopefully not take too long with it :P