Alex looked around. She saw that she was in the abandoned warehouse, it was dark and she could only see a portion of the building she was in. Alex lightly sat up and tried to access where she was.
"Where is Kryptonian?" Alex heard a woman ask a man who kidnapped her. The replied that they only found Alex, and then he left. The captor looked at Alex.
"You seem to be in a terrible shape, human. Despite our general anatomical similarities, humans and Kryptonians differ. We are not fragile, while you are, even though you are brave, but foolish," said the captor woman.
"Alura?" The woman looked like Alura, and talked like Alura, and in general resembled the woman in the hologram but there was something off, something how the woman walked and behaved that made this woman different from Alura's hologram.
"How do you know that name?" The woman asked.
"I have seen your hologram. Your name is Alura In Ze, mother of Kara Zor El," said Alex, as the captor woman flew closer to her and lifted Alex's chin, so that the two looked each other in the eyes.
"You are half right, Brave One. Yes, I am a member of the House of In Ze. But I am not Alura. You see, twins on Krypton were rare, due to the Matrix usually operating to create only one child. My sister and I were a rarity, and we loved to confused our parents. My name is Astra In Ze, and I am Alura's sister," said Astra.
"You know that you don't have to fight us, right? We can be allies, and share technological advancements," said Alex.
"Please, Earth is such a backwater planet. But since my planet is gone, I have to save this planet from destruction," said Astra, "And there is no one powerful to stop me here. My niece and nephew have my strength but none of my training, and I lead an army of Kryptonians and other aliens, most of whom are more powerful than a regular human," Astra smiled.
"Humans can surprise you," said Alex, not wanting to be intimidated by Astra. Truthfully, even if she was a regular human, she would not be scared by Astra. She knew that she had to keep her secret, especially from an enemy, possibly having a tactical advantage in the future.
"You will fail, Brave One. No one can challenge us, and unlike when I was on Krypton, I have powers here," said Astra, lifting Alex of the ground, and then throwing her back. Alex had to pretend to cry from pain.
"Kara, I need you," said Alex.
"I wonder; how do you know my niece?" Astra turned around and walked to Alex, lifting her from the ground once more.
"Screw you," said Alex as she saw red and blue colors flew towards her, and hitting Astra. Alex fell, and saw that Astra was now facing Kara.
"It's been ages since I've seen you, Little One," said Astra looking at Kara, dressed in her Supergirl costume.
"Aunt Astra? But how? Everyone on Krypton but Kal and I died. How've you survived?" Kara asked.
"I wasn't on Krypton, Little One. I tried to save Krypton but your mother, my sister imprisoned me and my followers in the Phantom Zone for all eternity. Don't look so surprised, dear niece, while you might think of me as a bad person, I did what I had to do to save Krypton, and neither of your parents was a saint you think they were. Your mother betrayed your trust, and your father created biological weapons to defend Krypton," said Astra
"You don't have to do this, Aunt Astra," said Kara.
"I do. I want to save this planet, and I will not let you stand in my way, despite our familial connection," said Astra.
"You are right, I wanted to say the same thing," said Kara as the two women began to fight. They flew at one another and threw punches.
While they were both equally strong, Astra was a military woman with years of combat experience, so unlike any other foe Supergirl has faced, Astra was on equal terms with her regarding their strength, and with her fighting skills, Astra managed to avoid most punches and kicks Kara threw at her Aunt, while Astra's hits landed on Kara's body every time.
Kara flew a few meters away from her Aunt, and sent her laser vision at Astra. Astra did the same, and the two were glaring at one another for a few minutes, and then stopped this show of powers, realizing that neither could overcome the other. So they continued their physical fight.
Alex looked at her sister and sighed. She so wanted to help, but she couldn't expose her secret, and while Kara was losing, Kara was powerful enough to survive and endure Astra's attacks, so Alex had to just wait, which she hated.
A few other aliens arrived at the warehouse and approached Alex, trying to hit her. She evaded, but one alien lifted Alex and threw her at a nearby wall. The three aliens then jumped at Alex, who evaded them and managed to use their abilities against them, without revealing her true strength.
Kara and Astra were still fighting. Alex saw that while Kara was tough, her sister began to tire, since she was not used to fighting so intensively for such a long time with an opponent who had equal strength to her.
More hits. Kara managed to hit Astra a few times, but the frequency of her punches actually landing on Astra became rarer. Finally, Kara collapsed on the floor.
"And I would have thought that you would've been stronger. A pity, but now I can take you with me, and make sure that you understand that you should be on my side, and not with these pathetic humans. The next time your friends will see you they will be your enemies," said Astra, lifting Kara off the ground, and ready to lift off the ground to fly to her base.
"No!" Alex screamed, got up from the ground, and to Astra's astonishment, flew towards the Kryptonian General and punched her in the face. Astra released Kara, and began fighting with Alex.
"How? You are not a Kryptonian, and yet I felt your punch! Only a Kryptonian is strong enough to hit me. Are you a Daxamite that somehow survived, since I assume that if a Daxamite were to survive they would have about the same powers as us Kryptonians due to us sharing the same sun," Astra was confused.
Alex had enough. She kept punching Astra, and unlike Kara, who mostly was on defensive, Alex fought Astra with a lot of offensive moves, landing more hits than Kara did. The two even looked almost equally matched, although Alex still was less skilled due to Astra being general for decades,
"How, tell me, how do you have this power?" Astra managed to hit Alex on the face, and Alex temporarily landed on her knees on the ground.
"She is my sister!" Kara cried, as she stood up and the two Danvers sisters charged at Astra, and jointly began to fight Astra.
"Sister? But that means," Astra blocked the attacks and flew few meters away.
"Welcome to the House of In Ze, Brave One," said Astra. "I never would have thought that True Love would actually make humans Kryptonians,"
"House of El," said Kara, hugging Alex, "My sister Alex Danvers is a member of the House of El,"
As the two sisters prepared to jointly attack Astra, she used her super breath to freeze her surroundings, temporarily blocking her surroundings.
"I've seen the news, you haven't quite mastered this technique," said Astra. "I am actually quite pleased to see that there is another Kryptonian, since now I can have another soldier," said Astra as Hank finally arrived on the scene and somehow managed to appear quite close to Astra.
"Ah, hello human. My name is General Astra In Ze of Krypton, and I would recommend for you to surrender, especially since you don't have any weapons that could harm me," said Astra.
"Are you sure about that?" Hank asked, revealing a knife and stabbing Astra in the arm. She looked shock and instantly flew away from the warehouse, leaving Kara, Alex, and Hank alone with the defeated aliens.
"Agent Danvers, I saw the end of the fight you two had with General Astra. We need to talk," said Hank.
"Director Henshaw, Alex is not your enemy," said Kara, as the two women broke the ice and hugged one another.
"I never said she was. Now, we need to capture these enemy aliens and get back to the DEO," said Hank.
When they arrived to the base, the three of them found an empty room. Kara sat on a chair, while Alex just stood next to her sister, and the two of them were facing Hank.
"How did you get Kryptonian abilities, Agent Danvers?" Hank asked.
"She is my sister," Kara replied.
"I know that, but how does that matter, Supergirl?" Hank asked.
"Back on Krypton, Kryptonians were mostly matched with others by the Matrix, but sometimes before this matching took place, a Kryptonian could fall in love with a non Kryptonian, and that person would become a Kryptonian. More frequently what happened, was that while most Kryptonians were matched by the Matrix, during travels they found people who they felt strong familial kinship and became brothers or sisters and the other person became a Kryptonian. So essentially, when a Kryptonian and a non Kryptonian had true love or soulmate or whatever term you want to use, with a non Kryptonian, be it either familial or romantic bond, that person also a Kryptonian," said Kara.
"And since Alex is your sister, she now a Kryptonian?" Hank asked
"Yes, but Alex only became a Kryptonian once we both truly felt a sisterly bond connection, not just Eliza and Jeremiah telling us that we were sisters. We truly love one another as sisters, which in turn turned Alex into a Kryptonian," said Kara
"Oh, I see," said Hank.
"And if, sorry, when Alex finds a romantic partner," said Kara as Alex hit Kara with her elbow, "And if Alex and her future romantic partner feel true romantic love, her romantic partner would also become a Kryptonian, and that way it's quite possible that in the future, we will have a small family of Kryptonians, but not just any love can be True Love, whether familial and romantic. A Kryptonian and a non Kryptonian should share a deep connection, and this would apply mostly to romantic love, where not every person I or Alex would fall in love would become a Kryptonian," said Kara
"I think I understand now. Agent Danvers, please extend your hand," said Hank. Alex extended her hand, and Hank brought a metal fork, which upon contact shattered.
Hank then took a small box out of his pocket and opened the lead container, revealing a small green rock. Hank brought it closer to Alex's hand. Both Danvers sisters immediately felt weaker and Alex fell on the chair.
"Hey," Kara said
"Interesting. Well, it seems that Agent Danvers has now fully gained Kryptonian abilities, strengths and weakness. Get rest and take a day off, that is an order. I want you both to get as much sunlight as you can. Dismissed."
Kara and Alex left the DEO and decided to watch a movie and eat pizza. They were laughing, enjoying spending time with one another. Little did they know that both of them would soon find their romantic true loves.
Next morning, while Kara was at CatCo, helping Cat Grant, Alex went with a small DEO team to clean up the mess she, Kara, Astra, and others made in the warehouse. When she arrived, she saw one woman examining the scene.
"Hey, what do you think you are doing here at my crime scene?" Alex asked, approaching the woman, who saw Alex, stood up, and walked towards Alex.
"Maggie Sawyer, NCPD," said Maggie Sawyer.
"Alex Danvers, FBI," said Alex, showing her badge. The two women stared at one another. They briefly argued, but in the end Maggie left and Alex had her team clean up.
A/N: I decided to make a soulmate / true love AU of season 1 with Maggie Sawyer and Cadmus elements from season 2. No Mon El. Since Kara and Alex are sisters, they have sisterly true love, while they will also eventually find romantic partners who will be their true loves.