Author's Note: This takes place on the day Ymir Fritz became a Titan.


"After saving the walls and many people who lived in Shiganshina District from the Warrior Unit... Eren Yeager believed that his work was to be far from done. He then convinced himself and Frieda Reiss to travel back and to seek aid Ymir Fritz, the original Founder of the Nine Titans."

In the middle of the woods in broad daylight, the Adult Eren Yeager and Frieda Reiss stood before and gazed at large tree in front them, which stood twenty meters high. The two Titan Shifters were currently in the past-all the way back during the Era of Ymir Fritz. They used the Founding Titan ability to travel all the way back to the day Ymir Fritz became a Titan.

"Um, Eren? If you don't mind me asking…"

"Go ahead." Eren said.

"Why did you want us to come out here?" Frieda asked.

Eren paused for a moment and thought of something while staring at the tree. Eren then closed his eyelids shut and thought of what a person once told him.

Flashback

During that same night... Eren Yeager lied on his back in bed between the sheets with his lover, Frieda Reiss. Who is sleeping soundly and rested her head on his right chest. She sounded peacefully as Eren refused to fall sleep. His green eyes had stayed awake as Eren thought of what to do next.

"Eren... be on your best behavior. If you do, then, I'll show you what's inside my basement."

Grisha's words echoed within Eren's head as he continued lying in bed. "Dad." Eren muttered.

End Flashback

Eren slowly opened his eyes and looked at the tree, again. "To save my dad from fate." Eren told Frieda.

Frieda had shockingly gasped, once she learned of Grisha's condition. "You mean?"

"Yes. My dad doesn't have much time, left." Eren stated as he thought of Grisha. He then thought of the time when Grisha had injected him with a syringe.

"T-that's terrible!"

"I know. And even though we saved everyone within the walls and bought them at least five years... that doesn't mean my dad and the other Titans-such as us are safe from the curse." Eren told Frieda.

"That's understandable." Frieda said, then thought about Grisha. "But... Does Doctor Yeager know you're doing this?" Frieda asked.

"I'm sure that he knows by now. We both still possess the Attack Titan." Eren said as he walked a tad bit closer to the tree hole. He tried not to slip and fall as he got carefully walked closer and closer to the big tree hole.

"Be careful, Eren." Frieda said as she watched Eren walk closer and closer to the tree hole.

After securing his ground close to the pit inside of the tree, Eren then looked back to Frieda and gave a hand gesture. Telling her to come closer to where he is.

Frieda paused for a second and listened. Instead of running toward Eren, she had taken small steps. It had taken Frieda ten seconds to catch up with Eren. As she caught up with Eren, she looked over his back shoulder and gazed at the bottomless pit inside of the massive tree. "It's so deep. I can barely see anything but darkness."

Eren raised his right hand for a moment and then pointed downward at the pit. "Inside this big tree is a deep and bottomless lake. And inside that lake down here lies a powerful specimen called... the Source of All Living Matter."

"The Source... of All Living Matter?" Frieda finished Eren's sentence.

"Yeah." Eren nodded, then looked toward the yellowish-orange sky. He knew that the sun would set, soon. "It grants whoever-or whatever it touches the power of all Nine Titans."

Frieda gasped in surprise as she had seemed to have no clue or knowledge of its existence. "Really?" Frieda asked. 'T-The power of all... Nine Titans?' She then imagined all nine different respectable Titans in her mind. "That has to be insane! An innocent girl like Ymir Fritz possessing all nine of those Titans, at once?"

Eren nodded toward her. "Ymir got in trouble releasing pigs from their barn without permission. And that caused Ymir to be hunted down like a fox by Eldians and dogs-which I can assume that is happening right now."

"So, if Ymir is being hunted down, does that mean-"

"Yes. As she ran for her life, Ymir ended up discovering this tree and as she tried to hide here, she fell down and ended up making contact with the Source of All Living Matter." Eren had explained to Frieda.

Frieda lightly gasped as she learned on how Ymir Fritz had become the original Titan.

Eren then stood and had taken a few steps back from the pit. "Ymir Fritz will be coming, shortly. Let's hurry." Eren then grabbed Frieda's right wrist with his own.

Frieda gasped as she felt Eren's grasp on her right wrist. "Eren?"

"Let's hurry. We have to be gone by the time Ymir arrives." Eren said.

Frieda gulped, then nodded. "Right."


Ten Minutes Later...

A critically injured young girl, named Ymir had ran and ran for her life in the woods as she was being treated like a fox being hunted by hounds. Ymir was currently being hunted and chased by Eldians on horseback and dogs. The hunters had fired multiple arrows at Ymir, only to hit her in her left leg and right shoulder. Her eyes were bleeding, due to hitting a tree, face first.

No matter how hurt she was, she kept running and running, until she tripped over a rock and fell face first. Tears streamed down her face when she slowly risen herself up from the dirt. As she slowly looked up, she saw a large tree in front of her, which is thirteen meters high and a few dozen yards away from her.

Ymir silently gasped as she heard the sound of dogs barking, horses neighing and Eldians screaming in laughter coming closer and closer. With the will to live, Ymir kept pushing herself forward and forward and she slowly walked toward the large tree with what she has left. It took a minute for Ymir make contact with the large tree as she walked in. She assumed it was a hiding spot, but unbeknownst to her, was a deep pit, where she slipped and fell inside of. Ymir landed inside of a deep lake after falling a few dozen feet downward.

As Ymir nearly drowned in a deep lake, she coughed as she was and was beginning to lose oxygen. And as she was drowning, a specimen unknown to humanity had begun to rise from the bottom of the lake. It was the Source of All Living Matter and it had sensed Ymir Fritz's presence and approached her. It stretched its roots out and made contact with Ymir's backside as she continued to drown. And in the next moment, Ymir's eyes and mouth begun glowing a shining bright white light.

Meanwhile, Ymir's attackers kept trying to hunt her down as their dogs kept sniffing the ground. Next thing they knew, they felt a tiny quake and saw a massive spine appearing in the sky. And in the next ten seconds, Ymir had fully transformed into a massive Titan. A Titan that no man has ever seen.

Ymir's skeleton-like Titan was over one hundred and fifty meters tall and could be easily seen from hundreds of kilometers away. Even King Fritz and everyone within the Eldian village could see Ymir's massive Titan from thousands of miles away. But had no knowledge of it being Ymir, herself. They were all completely shocked.

"RRRRAAAAAUUUGHH!" Ymir let out a scream, none like any other. As it had been heard from thousands of kilometers from across the land.


Meanwhile, Eren Yeager and Frieda Reiss were on Ymir's far right, thousands of kilometers away. They both had transformed into their Titan forms, ten seconds before Ymir Fritz had emerged from the twenty-meter tree in her Titan form. Both of the Titan Shifters gazed at Ymir Fritz's Titan appearance. Frieda Reiss looked shocked to see Ymir's massive and scary Titan form for the first time in her life. Eren stood had a normal look as he remembered seeing Ymir Fritz's Titan form, once in the Paths.

'My goodness! She's gigantic!' Frieda thought as she stared at Ymir's massive Titan.

'That's the Founder, Ymir for you.' Eren thought, then turned his Titan head over toward Frieda's. He noticed Frieda's Titan teeth were clenched and her eyes had a look of worry in them.

Frieda had been lost in thought as she had kept staring at Ymir Fritz's massive Titan form. "Eh?" Frieda had felt something heavy touch her right Titan shoulder. She glanced to her right to see Eren's left Titan hand touching her Titan left shoulder. 'Eren?'

'Frieda. Can you hear me?' Eren said as his Fifteen-Meter Titan continued to make physical contact with Frieda's Fourteen-Meter Titan.

Frieda gasped when she heard Eren's voice in her head. 'Y-Yes, Eren! I can hear you just well! But... how are you doing this?' Frieda thought while inside of her Titan form.

'Don't worry. I'm only using the Founder Power to talk to you, telepathically.' Eren said while talking to Frieda with his mind.

"You're using Telepathy?" Frieda questioned.

'You know about it?' Eren asked.

'I do. I have heard stories that my predecessors-long before Karl Fritz could use it to speak to Eldians. But when Karl Fritz had become King, he had forbidden his descendants who possessed the Founder-Including me from ever using it, again. That was part of the King's Vow.' Frieda had explained.

'I see. Well, now, you're free to use this ability anytime you wish.' Eren said as his Titan eyes blinked.

'Thanks.' Frieda replied. Frieda in her Titan form simply nodded to him.

'Now that's out of the way. Do you remember what we came here to do?' Eren asked.

'Eh?' Fried paused for five seconds, then nodded her head, yes. Again. 'Yes. To stop Doctor Yeager from dying!'

'Right. But first, we have to stop Ymir from reaching the King.' Eren used his large Titan right hand to point at Ymir Fritz's massive Titan body-which was slowly walking toward King Fritz.

'Right!' Frieda had responded.

Eren's Titan head then turned to the direction of Ymir Fritz from thousands of kilometers away from them.

'Okay, Frieda. You can do this. You're the Queen of Paradis and a direct descendant of Ymir Fritz. No one can do this better than you...' Frieda Reiss thought as she gave herself confidence. Frieda then felt her right Titan hand be grabbed. Frieda looked down her right shoulder to see Eren's Titan left hand grabbing her right. His hand was actually holding hers. Frieda thought it was cute for a moment.

'Okay. Both of us possess the Founder. We're both going to use them to draw Ymir away from the village and bring her toward us.'

In the next five seconds, both of their Titan eyes glowed a bright color. Eren's pair of Titan eyes were a bright green and Frieda's pair of Titan purple. The Titans then shrieked as loud as they could in order to catch Ymir's attention.

As both Eren Yeager and Frieda Reiss had shrieked as loud as they could toward Ymir in their Titan forms... it had taken ten seconds for Ymir Fritz to sense their presence. As Ymir heard shrieks, she also had felt a powerful electric surge course throughout her Titan body. Soon, reaching her normal body. As an electrical surge had reached her real body, her mind had flooded with memories. But the memories coursing through her mind weren't hers. These memories had belonged to Eren Yeager and Frieda Reiss.

Within the next minute, before Ymir could continue to slowly walk toward the Eldian village and toward the King that she had loved. Fortunately, Ymir had changed course and turned her Titan head to her right and quickly spotted Eren and Frieda within their Titans. Thousands of kilometers away from her.

Frieda had thought stared at the face of Ymir's Titan from thousands of kilometers away and begun to feel a bit intimidated by Ymir's Titan looks.

'Good. She noticed us.' Eren thought as he stared at Ymir's Titan face.

Ymir then slowly turned her entire body to the right and started walking toward Frieda Reiss and Eren Yeager, slowly.

'She's coming this way!' Frieda thought.

'Perfect.' Eren thought as kept shrieking for a moment. A minute later, both Eren and Frieda stopped shrieking when they noticed that Ymir had stopped moving. Ymir's massive Titan body was at least two hundred kilometers away.

Eren and Frieda had looked all the way up at Ymir's face.

'We got her full attention.' Eren had thought as he stared at Ymir.

A moment passes by, and Ymir Fritz attempted to move her skeletal jaw. Eren had noticed Ymir's jaw moving a tiny bit. "E... Er... Ren. Fri... Ieda..."

Both Eren Yeager and Frieda Reiss were thrown off a bit as they did not expect Ymir Fritz to speak words in her Titan form.

'S-she said our names!' Frieda had thought.

Then, in the next moment, Ymir Fritz's massive Titan body had begun to fall down on its knees while her Titan head pointed upward at the sky.

'What is she doing?' Frieda asked, which gained no answer.

Eren remained silent for a moment, then he had noticed something coming from Ymir's backside. "Hm?"

Ymir Fritz had ejected her upper body from her Titan body's nape and let out a sigh of relief. Her amputated tongue had fully regenerated and the light within her bluish-gray eyes had shined.


Later That Night...

A few hours passed by, the sky had gotten darker to pitch black, and the white moon in the dark sky was crescent during that time. Ymir Fritz's massive Titan body had lied on the ground, face first. Abandoned and nearly completely evaporated. The Eldians who were previously hunting Ymir with dogs were investigating the massive Titan body.

Meanwhile, Eren Yeager and Frieda Reiss had taken the young Ymir Fritz deep within the woods and far away from her evaporating massive Titan body and the attackers. Eren had placed his black jacket on Ymir's shoulders for comfort. All three of the Titan Shifters had markings under their eyes.

"Are you okay, Ymir?" Frieda asked as she bean down on one knee and placed her right hand on Ymir's left shoulder.

"Mm-hmm." Ymir nodded in response. "Thank you for saving me."

Frieda blushed a bit and twiddled her fingers. "Um, it wasn't my plan..."

"Hm?"

"It was all Eren's doing. He decided that it was best to come and rescue you." Frieda said, as she looked toward Eren and smiled.

Ymir Fritz then looked at Eren when Frieda mentioned him. "Eren... Yeager."

Eren was leaning his back on a tree. "It's nice to see you, again, Ymir." Eren said as he looked to Ymir Fritz.

Ymir had stayed silent for a moment as she then thought of one of the memories that coursed through her mind, earlier. She had seen a memory when Eren was hugging her within the Paths. "Likewise..."

"Are you ready to go?" Eren asked.

Ymir Fritz gasped when Eren asked. Ymir then looked back in the direction where her village is in. Dozens of thousands of miles away from where they are. She then looked back to Eren.

"I know you're concerned for your people... but one day, you're going to free them from the King's rule. Just as we had freed you. I promise." Eren said as he smiled at Ymir.

Ymir Fritz sniffled and smiled at both Eren and Frieda. "Thanks."