The Return of the Protagonist

After defeating Noise Marines, William decided to take out a primarily gathered enemy force near him before regrouping with the rest of his team. According to the sensor, there are about 80 life forms, but it could be more since daemons won't appear on the sensor.

'I'm gonna need Magos Callias to recalibrate the sensor to detect warp entities.' William thought to himself as he approached his destination as fast as possible (Terminator armor speed isn't much). Armed back to range weapons, William decided to save his teleportation capability for emergency use in case he had to distance himself from an unknown enemy in the combat.

A few minutes later, William arrived at his destination and saw something out of a nightmare. In the middle of a city's open space (Like a town square with a fountain in the middle), 50 Emperor's Children can be seen with three dozen daemonette mixed among them. In total, over 100 hostile enemies are in one place where they are enjoying a performance of pure passion and the deadly pleasure of skinning a large number of Legellan citizens alive.

A large band of Noise Marines is playing bizarre music, the daemonettes of the 'She who thirst' is busy processing human skins and to be used for something sinister while making sure their 'cattle' stays alive. William saw the aftermath of the process in which skinless individuals are then moved to the audience the strange musical performance. The entire process is some kind of sick butchering and demonstration of blasphemy entirely. William had enough and activated his blank ability and range weapons.

"Activate blank field generator!" William gave his command, and the terminator armor began to glow blue in certain armor plates. With the sound of humming noise, the armor amplified William's blank ability to hundredfold and expanded the range to cover the entire open space.

Quickly, William realized how quiet the armor got after three seconds of humming noise came out from his armor. It was as if the machine's spirit went silent, but William knew somehow that the machine was active in full power.

The moment the daemonettes and Noise Marines sensed William's blank ability, they all went into a frenzy. Some even went down to their knees with their hands on their head as if their brain was about to explode. Right away, William step forwards and fire everything he has from his two wrist-mounted weapons at servents of the Chaos. Thanks to his armor's auto-targeting system and near-infinite amount of ammunitions, William lunched one-person army worth of firepower to which he slaughtered half of the enemy within sixty seconds.

"SOMEONE KILL HIM! KILL THE ABOMINATION!" One of the Noise Marine took his helmet off and shouted as his eyes, mouth, and nose leaked black goo. Noise Marines and the daemonettes of the Slaanesh depend heavily on their connection to their god, The Prince of Pleasure. Through this connection, every action brings them the pleasure and feeling of the excess, which fuels the Slaanesh back in the Realm of Chaos.

Now, after unknown Astartes sever the connection, this brought not only the feeling of loss but also discomfort of loss beyond imagination. No longer connected to the Warp, the servants of the Slaanesh experience the reality, and currently, they don't like the feeling right now. This, of course, does not include the lethal level of negative blank frequency, which burns their very souls and takes away any chance of using a warp-related ability.

"Yes, kill the abomination and purge it with holy fire." William broadcast his words and pulled out his heavy flamer from his inventory. With a single pull from his trigger, the heavy flamer washes away the sins of traitors and daemons they side with by burning into ashes.

With their physical body gone, their souls must return to the Slaanesh, but they won't because they are no longer connected to the Warp. This means both Noise Marines and daemonettes were killed by William are truly dead, never to be reborn in the Immaterial.

After William cleansed the servants of the Chaos, he deactivated his blank field generator to see how much damage he did. The entire open field is burning as nearby houses catch on fire, creating black smoke as it continues to burn. Among the burnt corpse of the enemies, William found the burnt bodies of the civilians. William knew he gave them the merciful and quick death instead of experiencing time diluted torture.

'When I'm done with this place, I will rebuild this entire county with everything I have.' William thought to himself and turned around when he saw someone unexpected. Standing in front of William, Rana stood as her facial expression showed him fear and complete devastation of disbelief.

"You. You killed them all. They were innocent people! How could you do that?" Tears came down, and Rana looked at William as if she had never truly seen him before. William, caught off guard and surprised by seeing Rana in the middle of the enemy line, couldn't say anything but take a step forward.

"NO! Stay away from me. You… I never loved you. You are a monster in human skin!" Rana took a step back and drew her sword from her waist. Now, completely shocked by what Rana said to William, his head began to spin, unable to comprehend what was going on. The only thing he could think of was why and how.

'Why? How and why is she here in all places? I thought she was with everyone back in the…" William's thought was interrupted when Rana attacked him with her sword, taking each swing harder and faster with a mix of rage. Meanwhile, all William could do was take the hit from the sword while doing his best not to harm her. As this goes on, something sneaks in the shadow and begins to stalk William as he stands alone without realizing who or what is about to strike him.

"Why are you here? I was told you were helping the rear guard and assisting the medical team." William said to Rana as he raised his hand to grab her, but to his surprise, his hand went through Rana's body, and soon the image of her disappeared as if she was a ghost.

"What?!" William's brain went into overdrive, and his muscles immediately took a defensive stance, but it was too late as something big and heavy struck him in the back. The damage was none, but the brutal, blunt force of the unknown enemy pushes William face down to the ground.

"Oh, how easy it is to manipulate your simple heart. This is why no one likes simp in action stories. They tend to ruin the whole protagonist vibe." A male voice and somewhat high pitch said to William with a pitying tone as it circles around him. Each heavy step told William that his enemy is big enough to push him around while equipped with terminator armor. Most importantly, the keyword of 'protagonist' gave William who he is facing, and this infuriated him beyond his wildest dream.

'This damn bastard used illusion spell on me the moment I turned off my power. He used an image of Rana against ME!' He is fueled by his rage and wrath equal to his former father, Rogal Dorn. William used emergency teleportation to escape Makato's reach and reappeared back on his feet, a few yards away.

"You shouldn't come back here, Makato. You used Rana's image on me, and I will make sure you never do that again." William said to Makato, who is now clearly seen in his complete form while pulling out a halberd with a golden blade imbued with blue energy.

"I see you are using my stolen armor and plaster it with a bad paint job. Thanks to you, I had to go through the literal hell of one of the Chaos Gods, and now I'm back. After a hundred years in that hell hole, I'm back, much stronger and better looking than ever. All I have to do in exchange is bring you to my handler, and his boss will grant me a full blessing and a life of pleasure." Makato said to William and drew his two purple blades from the gold/purple mixed scabbards.

Standing a little taller than William in his terminator armor, Makato is slim but deadly to look at. As a servant of the Slaanesh, Makato's new body is somewhat beautiful as his toned muscles, and natural shape of the body give off perfection. But, as he is beautiful, he is also disfigured beyond terrifying as his skin is now purple and shows signs of forced shaping and deformity. Another horrifying thing that William can tell is that Makato, now a daemon prince, shows different gender parts. More specially, he has two large breasts and missing critical parts that define the male organ.

"You are missing a dick. Are you a full female daemon prince instead of half and a half? Holy shit. Slaanesh actually gave you a fitting punishment." William's realization and words made Makato angry. His current situation isn't something he wants to share with others or want them to know at all. This form is what made him suffer for a hundred years, and the only reason he managed to escape that painful faith was his knowledge of who William truly is.

"So what? I will get my reward once I bring you in and obtain the physical body of a man. I already got what I want just by spilling little truth about you, William. He knows who you are, the real you." The female daemon prince (Princess? I don't know, I'm just going with the proper title) gave an evil smile to William, and it took William a few seconds to realize what Makato did to survive the dark prince's realm.

"You didn't. You actually broke the whole hidden code of Isekai? What did you tell that walking STD with extra step?" William asked his question and took one step forward with his weapon ready.

"To survive and return here to take my revenge, I spill the beans. He knows where, when and who you really are. Just like I learned of what Chaos and Imperium are, he knows and understands what is so different about you compared to the rest of the Astartes. I told Tzeentch everything."