Sasuke Uchiha in Harry Potter

The Cave

Weeks passed, and the emo continued to train intensely; he needed to increase his chakra reserves to be able to use the Rinnegan.

For his taijutsu training, he kept using clones, but the weapons he had bought broke due to the intense kenjutsu training.

As for ninjutsu, he was strengthening the jutsus he already mastered to make them more powerful, focusing on enhancing all the techniques of the water, earth, fire, and air elements.

Three of his elves attacked him at the emo's command, not only with frontal attacks but also using apparation and invisibility.

When he was injured, he had to act quickly to prevent the elves from self-harming. After the training, they cleaned up and rested until they heard a crackling sound coming from the courtyard.

Alfa: I found the location, master.

Sasuke: Excellent work. We'll go tomorrow; everyone needs to rest now. Beta and Winky, help Alfa to his room and don't forget to bring him some food.

Alfa: Thank you, master.

In the kitchen with the four elves:

Alfa: This is the best master I've ever had in my entire life - he said, crying.

Beta: I agree. I still remember my old masters. They punished me for any mistake, but master Sasuke doesn't. When I broke a vase, I thought he would punish me, but he just asked if I had hurt myself while examining my hands - he said, crying.

Gamma: When he asks for help with training, I'm surprised. Whenever he tells us to attack him, my previous master asked me to stand still while he practiced spells on me - he said, crying.

Winky: My past was different. I had great masters, but I made a mistake and was freed. It was all my fault. I thought I would die, but I ended up finding a master who treats me so well. Before, it would have been more harmful because he was a Muggle.

Alfa: All this time we've served him, I've realized that this doesn't affect us at all. The treatment depends on the wizard we serve, not their blood. Master Sasuke is definitely the best.

The three elves nodded.

The next day, Sasuke and Alfa were ready to leave. Sasuke wore his Anbu outfit with the mask.

Both disappeared and reappeared on the cliffs near the Torquay cave.

Sasuke: Stay back, Alfa. I'll take it from here.

Alfa: Alright, master - he said before disappearing.

Sasuke surveyed the terrain and noticed there was no path forward. He then jumped into the water and channeled chakra into his feet to walk. He ran across the water until he reached the cave. Sasuke entered and walked to the back of the cave, where there was no exit.

Sasuke looked around but found no other passage, button, or lever.

Sasuke: I don't have time to waste searching for a way through.

Around the emo's body, the ribs and arm of the Susanoo began to form. The arm struck the wall, breaking through. The emo continued moving forward until he found a lake, but there was nothing else around.

Thanks to the Mangekyou Sharingan, he could see perfectly. He noticed there was a kind of island in the middle of the lake. He looked around but saw no kind of boat.

Sasuke: It's obvious he wants me to swim there, but there must be some kind of trap, like the previous horcrux - he thought.

Sasuke sighed and jumped to flip upside down on the ceiling, running toward the island.

The island was not very large, and in the center stood a kind of rock with a bright light and a pedestal on top.

As he approached the pedestal, he saw it was filled with an emerald liquid that emitted a phosphorescent glow, and inside the liquid was a medal.

Sasuke reached out, but he couldn't grab the medal. It seemed to have some sort of barrier.

Sasuke: It seems the only way to take the medal is by drinking it, but it could be poison.

Sasuke thought for a few minutes, then performed hand seals and shouted, KAGE BUNSHIN NO JUTSU, creating ten clones.

The clones drank one at a time. As they drank, they began to feel pain, but they continued drinking nonetheless.

When all the clones disappeared, there was no liquid left. Sasuke grabbed the medal but didn't feel Voldemort's presence like he had with the other horcruxes. He opened the medal and found a note.

Dear Dark Lord,

Please allow me to express my last words. Although I know it will take some time before this note reaches your hands, I feel compelled to reveal that it was I who discovered your darkest secret. With great courage, I stole the true Horcrux and am determined to destroy it as quickly as possible.

As I face the inevitability of death, I keep alive the hope that one day someone will be able to complete this mission. May my action serve as a small light in the darkness you have cast over this world.

Sincerely,

R.A.B.

Sasuke: Damn, so much work for nothing. - He said, throwing the medal into the lake.

Due to the emo's action, many bodies began to emerge, surrounding the island. Sasuke examined them closely as they approached, concluding that they were Inferi.

Sasuke: This just got interesting. - He said, preparing his katana.

The emo rushed towards the Inferi and began to slice them. The Inferi were slow, so they didn't stand much chance; some were decapitated, others cut in half, and some were thrown away.

All the Inferi had a single function: to drown anyone who entered the cave. But it was difficult for them to hold onto the emo, as he was constantly moving, and every time they got close, they were cut down.

A while passed as the emo continued to attack them, but the number of Inferi didn't seem to decrease; more and more kept appearing.

Sasuke remembered reading about them in the forbidden section, including their weaknesses.

Sasuke jumped back to the island, performed hand seals, and shouted, "CHIDOU KAKU," making the small island rise above the water; the Inferi could no longer ascend since it was too high.

He performed more seals and shouted, "GOUKA MEKKYAKU"; a large burst of fire was unleashed, burning the Inferi, but some still managed to escape by diving into the lake.

Determined to free them from this torment, the emo took a kunai and threw it at the ceiling, where there was an explosive seal that detonated, opening an opening. As he saw the fire extinguishing, the Inferi emerged again but received another blast of fire. After that, the emo launched the jutsu "Katon Goryuka" into the sky to heat the atmosphere.

Rain clouds began to form over the cave. Sasuke exited the cave through the opening and saw that several Inferi had emerged again.

Sasuke: I'll free them from this torment.

Thunder began to rumble; Sasuke raised his hand and then lowered it, shouting, "KIRIN."

A thunder dragon descended from the sky, entering the cave and striking all the Inferi, including those submerged due to the water conducting electricity. All the corpses were destroyed. The cave also could not withstand the attack and began to collapse. Sasuke was already distant, standing in the sea, watching the cave crumble.

Sasuke: Rest in peace. - He said before calling Alfa and disappearing from the site.