This is a Star Wars Scenario, but with Kylo Ren. This story takes when Lumine and her Friends along with Unknown God confront Aether and this contains the 2nd Ending, & Yaether ship (Yae Miko x Aether). (This is the Final Part of the Aether as Kylo Ren).

Lumine ignites her lightsaber and charges as Kylo did the same and the duel between the Twins has begun, He pushes her towards the edge as Phasma and her former enemies witnessed the battle.

Phasma: Oh no.

She rushed towards them. Lumine looked at her brother in fear.

Aether/Kylo Ren: *deep voice* You need a teacher! I can show you the ways of the force!

Lumine heard the voice.

???: Use the Force. Lumine. Let Go.

Her Combined efforts with her returned powers and the Force, She's stronger now, then Yae Miko also joined but this time she ignited her lightsaber that she secretly a Jedi as she revealed herself much to their surprise.

Miko: I got your back.
Lumine: Let's go save my Brother.

Then Kylo Ren duels with Miko and Lumine, with their Combined Efforts, She hits him many times as she damages his mask then she pushes him back. She still does not want to kill her brother, Wanting to save her brother.

Aether/Kylo Ren: *deep voice* Lumine.
Lumine: Aether.

They stared at each other as Phasma witnessed the revelations of the twins.

Lumine: I won't leave you! Not this time.

He stared at his sister for the moment.

Aether/Kylo Ren: *deep voice* Then, You will Die.

He ignited his lightsaber once again, she prepared her lightsaber as Miko did the Same, However, when they heard her voice.

???: Aether!

Then they looked in their direction was none other than Unknown God who was responsible for their separations.

Lumine: You Again!

Sara & Phasma's Troopers prepared to fire.

Aether/Kylo Ren: *deep voice* So we meet again.
Unknown God: Take off that Mask, You don't need that.
Aether/Kylo Ren: *deep voice* Why do you want to see me without the mask.
Unknown God: The face of my son.
Aether/Kylo Ren: *deep voice* I refuse to take off the mask.
Lumine: Ma'am, What do you mean Aether is your son?!
Unknown God: And you're my Daughter.
Lumine: What are you talking about?
Unknown God: The Truth is... I am your mother.

They were shocked that Unknown God is their Mother but Kylo Ren refused to believe that. He was angry and confuse.

Aether/Kylo Ren: *deep voice* No... That's not true, That's Impossible!
Mom: It's true. The reason is I pretend to be bad, & separate you both to protect you both.
Aether/Kylo Ren: *deep voice* LAIR!

He ignited his lightsaber and charged and hit her many times but was blocked by her powers then he screams as he tries to slice her but she dodged as he glared at his mother.

Mom: it's over Aether.
Aether/Kylo Ren: *deep voice* Nothing is truly over.
Mom: This Fight is over. I know the darkness is eating you up inside, every day whether you feed it or fight it.
Aether/Kylo Ren: *deep voice* It's too late!
Mom: No, it's not, I know the choices that I made took all your choices away and I have failed you, Aether. I failed you, and I'm sorry.

His hands are shaking while he's holding a lightsaber clinching his hand. He took off his helmet.

Aether/Kylo Ren: Tell me? Are you my Mother?
Mom: Yes, I am.

And with that, Aether accepted the Truth. Lumine tries to reach him by giving him a hand, but he put on his mask as he walked away.

Aether/Kylo Ren: *deep voice* I'm sorry Lumine. And Miko.

Miko looked at him in sadness.

Aether/Kylo Ren: *deep voice* I love you.

She blushed as Phasma Jealousy and so did Keqing but they were saddened by their parting ways.

Aether/Kylo Ren: *deep voice* May the Force be with you.

And with that, he walked away as the bridge collapsed. Much to their sadness, Following the Days, The First Order was defeated but they told them that It wasn't time to celebrate, Aether fled the battle meant to be exiled himself. Former First Order Soldiers and Abyss Mages put their side their differences with the Humans they must search for him. What they didn't know was that Aether is exiled at the far side of the Mondstadt, Aether who still has Kylo Ren Persona set up the campfire, He still needs some time to think about renouncing as Supreme Leader and his Kylo Ren Persona then He met Presumed Dead Sith Lord: Darth Maul.

Maul: We meet again, Kylo Ren.
Aether/Kylo Ren: *deep voice* What do you want?
Maul: I wanna ask you that You're the coward.

He stayed silent.

Maul: Take off that Mask.

He took his mask revealing his depressed face.

Maul: Look what has become you, A rat in the desert.
Aether/Kylo Ren: Look What I have risen above.
Maul: I thought you'll become like Vader, but perhaps I was wrong.
Aether/Kylo Ren: You have nothing to do with it.

Maul gets angry as he ignited his lightsaber and slashed it on sand putting out a fire.

Maul: Then What do you have?!

Aether was deadpanned about his actions.

Maul: Why come to this place, not simply to hide? Oh, you have a purpose here. Perhaps protecting something? No... Protecting Someone.

He was shocked a bit that he mentioned he protect that he loved...

Yae Miko

And his sister.

Lumine.

And his friends.

He was a bit angry as he had enough of his threats, as he ignited his Lightsaber and in battle stance, Maul ignited his double-bladed lightsaber as he did the same, They glared at each other. they charged and clashed as the duel begins, Aether uses his Force Push against him. The duel ends when Aether slashed down Maul and His Lightsaber destroyed into two. A shocked Maul looked down at his wound. Unlike last time, both ends of the lightsaber remained functional. He turned them off before dropping to one knee, but Aether caught him before he could fall to the ground and held him.

Maul: Tell Me? Is She The Chosen One?

Aether heard his answer that he mentioned Lumine as The Chosen One when he felt the strong within her the Force.

Aether/Kylo Ren: She is.
Maul: She... Will... Avenge Us.

With that, after so many years of rage and anguish, Maul finally passed away peacefully, believing that his master's wrath was over. As a final gesture of mercy, Aether closed his eyes and laid him to rest. He was ready to confront the Sith Lords for manipulating him. He set on the Journey to the Abandoned Tower where he Fought Abyss Herald. Then He met Emperor Palpatine Known as Darth Sidious. Along with General Grievous

Palpatine: Hello, Kylo Ren the Supreme Leader.
Aether/Kylo Ren: You manipulated me and seduced me to the Dark Side!
Palpatine: So you knew.
Aether/Kylo Ren: I'm here to take you down.
Palpatine: Yes, but first, You will take down the Knights of Ren including Dooku.

With that, Knights of Ren led by Dooku surrounded him. He ignited his lightsaber and the fight began until the duel with Dooku then He overpowers him as he pointed his lightsaber.

Palpatine: Good, Become my Apprentice, You're stronger now with the dark side. Now, Kill him.

He looked at his eyes.

Palpatine: Do it.

He put down his lightsaber.

Aether/Kylo Ren: No, you failed, I'm a hero, who seeks redemption.
Palpatine: If you're not to be turned then you will be destroyed.

Palpatine uses his Lightning Force against, It was so much pain for him.

Palpatine: it'll be an end for you, Do you understand?
Aether/Kylo Ren: I'm not afraid.
Palpatine: You will.

He used his Lightning Force but Aether blocks with his Lightsaber. He is almost pushed back as he tries to regain his balance.

Aether/Kylo Ren (thoughts): I'm not afraid, I'm not afraid. I'm not afraid!

He tries to not be afraid, but sadly. He is. He finally admitted that he was afraid.

Aether/Kylo Ren: I am afraid.

He was done for. He blocks the Lightning but It was too strong. Then One Electro Abyss Mage witnessed.

Abyss Mage: Cmon, Your Highness!

He tried his best to defect the Lightning Force, it was no use. He thought he was alone forever as He was about to lose, but then Someone Grabbed his Arms then another, Aether looked at each side and was surprised. Lumine and Yae Miko came for Help. They smiled at him. He realized that Love can make him Stronger, Rather than Hate.

Lumine: We're here for you, Aether.
Miko: And you're not alone.

He regained his confidence, They managed to help him to defects the lightning.

Miko: You're not going to win, Emperor.

She ignited her lightsaber as Lumine ignited her lightsaber as well.

Lumine: You manipulated my Brother, and We're gonna manipulate you.
Palpatine: Are you challenging us, Jedi Knights.
Miko: Yes we are.

Then Out of nowhere, Kujou Sara, Gorou, and Kokomi brought their Armies Followed by Jean and her Knights, Stormtroopers, Abyss Creatures, and Ghosts of Jedi Knights. Much to Aether in Relief and Palpatine in fear.

Phasma: Charge!
Gorou: Attack!
Soldier: Charge!
Sara: Now!

They charged as the Battle in Far Side of Mondstadt has begun then Raiden Shogun came to his aid to defeat Palpatine and 4 Heroes dueled against Darth Sidious. Then Unknown God appeared and took his powers away. Then Palpatine and other Sith Lords are now defeated.

[There should be a GIF or video here. Update the app now to see it.]

(Start the Music)

Lumine hugged Aether followed by Paimon

Lumine: I miss you brother.
Aether/Kylo Ren: I miss you too.
Paimon: Paimon misses you.
Aether/Kylo Ren: You too.

Then he saw Miko as he dashed towards her as she did the same, they hugged and then They kissed.

Aether/Kylo Ren: I love you.
Miko: I love you. Just don't leave us.
Aether/Kylo Ren: I promise, I promise that I will protect you.

Miko smiled as Phasma and Keqing hugged him and told them that they missed him so much. Dain forgives him for everything that he's done, he forgave him. Then he met Ghost of Darth Vader but turned into Anakin and Ben Solo.

Ben: You did good kid.
Anakin: And you're no Sith, you still have a choice as we did.
Aether/Kylo Ren: You're right, I will make a choice.

He throws his lightsaber renouncing himself as Supreme Leader and abandoned his Kylo Ren Persona. Lumine finally fulfilled her promise and the Twins finally reunited and so did their Mother. She finally saved her brother from the Dark Side. It turned out that their mother is trying to protect her children from the Dark Side of the Force and so did the Galactic Empire.

Paimon: It's good to have you back.
Aether: Yeah, Thank you for setting me free.
Lumine: You're welcome.
Jean: I know that you want to ally with Abyss Order and we understand that.
Abyss Mage: We're going to make peace together.
Sara: Just like the Old Times.

4 Days Later

Following the War between Resistance along with Shogunate Army & Knights of Order and The First Order Along with Abyss Order and His Legacy. They made a peace and Jean, Ei, Zhongli, Venti, established the Jedi Training Academy, and the Jedi Knights are born, Former Soldiers and Officers along with Former Abyss Mages formed the Alliance Government: The Grand Army of Galactic Republic. Teyvat is now at peace, Abyss Order & the First Order are now collapse and Humans are cured from the Abyss Curse and the War is abolished. as for Aether, he suffered from his PTSD from the past as Kylo Ren, Aether looks at the view.

Lumine: Brother Are you Okay? We did it.
Aether: Yeah, It's just that I've been traumatized and haunted by the memories as Kylo Ren, I almost killed you and our mom back there.
Lumine: I know, it's hard and I understand about your past and for what you have been through, but it's over now, we can live peacefully.

Aether couldn't help but chuckle.

Aether: You're Right, Lumine. It's all over now.
Mom: Kids! Dinner!
Lumine: Oh that's our mom, We don't want to make her wait.

They went inside to have their dinner. The Next Morning, Lumine, Their Mother, and Jean decided to train him to become a Jedi instead of becoming a Sith Lord, to overcome his PTSD and his Dark Side He used his Lightsaber but this time, Instead of Red. It was a blue Lightsaber.

One Day he will become a Hero of Teyvat and they lived happily ever after.

End of Act III

The End