I wrote this in one day. ONE DAY. Well, mostly because I knew exactly what I wanted to write haha.

But here you have it! A chapter that would explain a few things, and as promised, i give a bit more Erestoria.

Things will pick up in the next chapter.~

Enjoy!

Another morning in Historia Reiss' body.

Eren had picked up her morning routine by now: Frieda rushes into her room to wake her up, she takes a shower with the fanciest soaps, puts on her day crème, gets dressed properly, and goes downstairs to have breakfast with Frieda and Father.

While Eren enjoyed the luxury of this life, he couldn't help but feel once again trapped, trapped in those routines, those rules, and orders he kept receiving, only now, he was trapped in a golden cage, full of privileges. He thought he'd like it, but he didn't.

On that Saturday morning, after breakfast, Eren tried to take a look at the garden. It reminded him of home, where there were flowers and trees almost everywhere around him. He realized how much he actually liked the scenery of his village, it felt so free and colorful…

As he tried to open the door to the balcony, a tap on the shoulder stopped him.

"Story?" Frieda blinked to the Blonde. "Did you pack your things?"

"Huh?" 'Historia' blinked. "Packed for what?"

Apparently at the end of every month, the Reiss family would take off to their main Residence to spend time with other family members. But it was mostly an excuse to get updated with news from family and judge each other, or fawn over each other's success.

They were taken there around 10am, in a big Mercedes car, and to Eren's joy, the Main Residence happened to be a castle at the top of the mountains. Finally a view he was familiar with!

The teen almost jumped out of the car when it stopped, running to where the Castle was. He stopped, gasping in awe to the magnificence standing in front of him. It looked like an ancient, typical German castle, with a few modern touches, but those weren't very appealing.

"Historia!" Frieda laughed to her sister, getting out of the car. "Get your bags, silly!"

Eren obeyed and grabbed Historia's stuff before rushing back to the Castle with excitement. Oh how he wished he had lived there as a child! He would've had so much fun playing knights with Armin and Mikasa.

And the rooms! The rooms were gorgeous! Historia's room was bigger than home, had a nice medieval look with modern technology here and there like a TV, electric lamps, a radiator, and… A Nintendo DS laying on the table?

Wow this feels just like home, completely behind the time, Eren thought playfully.

The teen grinned and jumped belly first on the bed, bouncing a bit as he did. He laughed, snuggling against the high quality comfy mattress.

Okay. Gotta check something first, he thought, reaching for the drawer next to him. He pulled on it, looking inside it and to his big relief, there were no pads nor tampons in it. But instead, an adorable picture of a much younger Historia and Frieda. Both were smiling brightly to the camera, sitting in the castle's main living room and knitting. They seemed to be knitting long red threads.

Cute, Eren smiled, staring at the picture for a while. Historia looked quite happy in this picture, and had the brightest smile. But on the recent pictures and paintings, she always looked somber, Eren wondered why…

A knock on the door tore Eren away from his thoughts.

"Historia?" Frieda asked softly from behind the door. "Can I come in?"

"Sure!"

The tall dark haired woman walked in, smiling to her younger sister. She walked over to her, expression soft.

"How about we return to our tower?"

"Huh?"

The tower. A lonely little tower that was a few miles away from the castle, on top of the mountain. Frieda and Eren rode there with their Horses, much to Eren's displeasure. He wasn't good with Horses, even with Pepper, Historia's horse, who was the most angelic Horse ever.

Once they reached the lonely tower, which was beautifully hidden in the Forest, Eren almost fell off from Pepper. He still hadn't mastered the art of Horse riding.

"Bad day for you and Pepper again?" Frieda asked playfully, tying up the Horses. Eren just gave her a glare, to which she chuckled. The tall woman then led the teen up the tower, walking up the stone hard stairs. Clumsy as he was, Eren almost tripped twice on his way up there, much to Frieda's amusement.

Once they reached the highest room, Eren expected it to be a medieval armory or something cool! But no. Once Frieda opened the door, only the daylight coming from the single window lightened up the room, and there was a huge wall with wooden plaques hanging on it. The wooden plaques had faces and names on them, and were somehow tied with threads. Eren noticed a plaque with Frieda's face on it. It was relatively low, and it was tied with a neutral dark blue thread to a plaque with Historia's face on it. Above them, blue threads hung them to their father, who was tied with a red thread to a beautiful blonde mother, supposedly Historia's mother.

Frieda lightened up a few candles while Eren observed the plaques, rather curious about them.

"Haven't taken you up here since you were a child," Frieda said softly, getting two pillows out of a wooden box next to the door. She put the pillows in front of the wall, and sat on one of them. Eren joined her, crossing his legs in pretzel style, to which Frieda raised a brow, and smiled faintly.

"Remember how I told you… That these threads are an old heritage in the Reiss family? That it's all about connecting people, meeting unexpected people, people who will have a heavy impact on your life?" Frieda smiled softly, eyes glancing back to the Wall. "Well… You're a lady now, Story, and according to traditions, father is the one supposed to tie your red thread to the man you will marry, but… Somehow… Your red thread is missing," she said, looking back to the Blonde. "Did you take it without his permission?"

Eren blinked to that, finding all of this rather complex. He shrugged, not really knowing what to answer. Maybe Historia did take it? But if she did, he wasn't aware of that.

"I remember when we made it, your thread," Frieda smiled. "You were determined to do this on your own. Like… You wanted to be in control of your own fate. And I think… You still want that," she said with a smile. "It's alright, Story. You can tell me…"

She scooted closer to Eren, suddenly looking serious. "You kept the thread because of Reiner right?"

Eren's eyes widened to that and he immediately straightened up. "HELL NO."

Frieda burst out of laughing, holding onto her stomach as she watched her sister's face decompose into embarrassment and surprise.

"I knew it! You liiiiiiiike him."

"No I don't!"

Eren almost replied angrily. Which kind of surprised him. Why was he getting all worked up about this? He knew that Historia liked Reiner. Why was it so hard to admit it? Why did he care?

Frieda just chuckled, poking Historia's forehead playfully, to which Eren jumped a little.

"It's alright Story. You two would make beautiful blonde babies. And father likes him too."

That's not really a compliment, Eren thought bitterly.

"Did he tell you that he's going to invite Reiner to the Christmas Ball?"

Eren blinked to that. Which Christmas ball?

"Storyyy," Frieda sighed, seeing the confusion on her sister's face. "The Ball at the end of the year? That will take place here? Lots of important people? Now I know father is having… Trouble at work right now, but he really counts on us to make this night great. Promise you'll behave?"

Eren just groaned a bit, but nodded slowly. He just hoped he won't have to be the one to behave on that night. He hoped the real Historia would do that.

The teen looked back to the plaques, expression softening. So this was a thing? Tying fates together? Fates represented by red threads?

Eren glanced back to Frieda, who had lightened up a candle, and was now praying lowly:

"To you, Tsukiyomi-sama, who watches over us, who determines our fate and doing in life… I pray today that my sister's fate shall be fortunate, and that she lives happily with the one she chose."

Eren's eyes softened a bit to Frieda's prayer, feeling the unconditional sisterly love she was feeling for Historia. He put his hands together, and started to pray too. He knew who that god was. Tsukiyomi, the god of fate, as well as the Moon god.

Tsukiyomi-sama, I bow today before you not as Eren, but as Historia Reiss. May this girl and her sister have the life they deserve, full of smiles and safety? But most of all, let them be free, and let them determine their own fate. Thank you.

Once he was done, he saw Frieda looking at him with fondness, and a few tears in her eyes.

"You've changed, Story."

Eren only smiled to that, and reached out to hug the older sibling, gently patting her back. He genuinely wished for her and Historia to be happy. After all these weeks switching with Historia, he knew enough about her to wish her a good life. But still, today only made him want to meet her in person…

As they returned back to the castle, Eren readied himself for bed. But as he did, a wild idea came to his mind. He grabbed the journal he had packed, one he found in Historia's drawer back home. But as he opened it, he saw stuff were already written in it. Embarrassed, he realized that this was Historia's dairy. He flipped a few pages to find a blank page and as he did, he found Historia's latest entry written next to it:

'Eren is mad that I ask way too nicely to everyone, but what is wrong with that? Why is he grumpy with everyone? I wish I could ask him… He seems like a genuine and kind person, and he's actually very handsome too. He is full of life according to his friends and sister, loud, but full of hope and ambition. I envy him. My life has already been written down without my consent. Everything around me is controlled. But in his skin, nothing is. And that's wonderful. I feel so liberated, and free when I'm him. I wish I could have a life similar to his…'

Eren's eyes softened to the entry, feeling his heart flutter a little. He smiled a bit, having another idea… He tore the blank piece of paper from the journal, and wrote something on it. After that, he fell asleep, with a content smile on his face.

The next day, Historia woke up in her body She took a solid minute to realize where she was before rolling over and reaching for her phone on the drawer. That's where she noticed a piece of paper laying on it, much to her surprise. She blinked, sitting up and reaching for the paper, reading it.

'It's time for you to take your fate into your own hands! Be Eren in Historia's skin.

-Eren

PS: Thanks for calling me handsome ;P'

Historia's cheeks turned bright red to that last part and groaned lowly, readying herself to write down an angry response to Eren on her phone. But she stopped herself, realizing that she was overreacting. What Eren wrote was actually sweet… She smiled to herself, holding the note to her chest and holding it tight. Eren believed in her, and that, made her so happy.

I want to meet him, so badly…

Next chapter: The dream, the text, the jealousy