Emiya was awake before his eyes opened, and he kept it that way. No sense in letting people know he was awake. In his days as a Counter Guardian, when he had to work with the locals, he heard many secrets he wasn't supposed to hear. Being in a different world doesn't change what he knows what to do. On top of that, he needed to review what he knew already and plan what to do next.

From the beginning, it seemed like the world's technology was in the Middle Ages, or at least something similar. Spears, bows, arrows, simple weapons. No guns, or even a musket, meant no gunpowder either.

However, what was new was the magic thrown around the battlefield. He saw magic circles that summoned fire that were thrown as if they were fastballs in baseball, lightning that hit precisely where the enemy hit, and even what seemed to be tornadoes that cut through armor. However, the most peculiar magic was that dark light in the end, which seemed to be impossible, yet Emiya saw it with his own two eyes. On top of that, to be able to break through a petal from Rho Aias, a Noble Phantasm…

'It was something to look out for.'

Something creaked and Emiya began to hear voices. Perhaps a door opened, and he had visitors.

Lambert looked down at the child that slept atop a medical bed. It has been a couple of days now since the failed assassination attempt, and only the child was left asleep. All living members were awake, albeit most were still stuck to resting on a bed. It took him two days to make sure everyone was alive and see who couldn't fight anymore. He also found time to send messengers to Fhirdiad, asking Rodrigue for reinforcements on their way back.

Those two days also included talking to the leaders of the town. The Duscurian "army" turned out to just be a wandering mercenary group with some local Duscurians. In his distress, he forgot that Duscur was made of scattered towns and it was hard to keep a standing army that encompassed the entire country.

On the other hand, Jeralt the Blade Breaker led the mercenary group. He thanked the Goddess for his luck. Jeralt and his men were currently on stand-by, awaiting the second wave, should it ever come.

"How is he? Any changes?" Lambert asked Mehmet, the Duscurian doctor, but kept his eyes on the child, looking for a sign, or even a twitch.

Like all Duscurian natives, he was dark-skinned, similar to the foreign Almyrans. However, while Almyrans had dark hair, Duscurians has white-gray hair. Mehmet was no different. His hair was shaved short, and a simple sideburn that reached his beard completed his look. He was well-built, but was on the leaner side amongst the ones Lambert had seen before, most likely since he was a doctor rather than someone who did manual labor.

"None, your Majesty. His breathing has been stable. We have used both Recover and Restore on him to make sure. As of right now, based on Lady Patricia's words, it may just be that his body needs rest. A Holy Knight doing the physical feats that Lady Patricia said would certainly be believable, but a child? It is out of the norm." Mehmet answered.

"What about Crests? Do you think he has one?" Crests would certainly answer how the boy could do what he did, but it was impossible to see it physically.

"It's certainly possible, but your Majesty, his body…" The doctor hesitated, unsure on how to bring the topic up.

"Don't be coy with me. What is it?"

Mehmet sighed. "The boy has numerous scars around his body. It seemed like animal scratches at first glance, but upon closer inspection, the scars are too big for just the occasional boar. I believe that the boy has fought larger animals constantly. He may live in the forests, but his skin tone and facial structure show that he is not a Duscur native. He's more like someone from the Empire or the Kingdom. He might be someone that travels around, but none of what I just said explains how a child can do all the things did."

"Reality conflicting with information?" Lambert wondered, whispering to himself.

There was a knock on the door. "Your Majesty, may I enter? Lady Patricia is with me." Glenn's voice rang from the other side of the door.

"Come in," Lambert said.

Glenn and Patricia entered the room. Glenn had bags under his eyes due to the lack of sleep in the recent days. He kept awake when Dimitri wasn't with Lambert, as if worried that assassins would come from all directions. However, recently, Dimitri has been mingling with Jeralt's mercenary group, specifically Jeralt's daughter, Byleth. Byleth was an upcoming mercenary, known for her silence in the middle of the battlefield, earning her the name Ashen Demon. With Jeralt and his men around Dimitri and Byleth, Dimitri was safe until Jeralt could reconvene with Lambert. It also helped ease everyone's minds that Jeralt was the previous, and greatest, Captain of the Knights of Seiros.

Patricia, on the other hand, was worse in the beginning. She ran herself ragged ever since Jeralt's mercenary group arrived. She healed whoever she could, like a woman on a mission. It didn't matter who needed healing, nor how big the wound was. On Lambert's insistence, she finally took a nap in the afternoon of the first day, which resulted in her conking out for an entire day.

As of right now, Patricia seemed like she was shining. If Lambert was an ordinary man and if the situation was not so dire, he might have swooned.

"How is he, doctor?" Patricia asked.

"We've used Restore and Recover on him, so he should be fine. More than likely, he pushed himself last night and currently just needs rest," Mehmet answered.

Lambert glanced at the doctor to continue. "However, his body is littered with scars, from what seems like large animals. I've also surmised that he may be a wanderer, seeing as he looks more like an Adrestian or even from Faerghus."

Glenn frowned, deep in thought.

"What's in your mind, Glenn?" Lambert asked. "You seem like you have an idea."

"Ah, yes. More like a thought, really. Is he perhaps with the assassins last night?"

Lambert narrowed his eyes. "How do you mean?"

"A mysterious hero, saving the King and his family in the last minute. It would certainly gain him their trust. On top of that, as the doctor said, he's not Duscurian. It's possible that he came with the assassins through their Teleport spells. There's no way through the forest without being seen nor heard. Sir Jeralt also concluded that the enemy used Teleport spells. There was that flower that shielded us from the enemy's Death spell, one of our mages identified it as such. There's also that armor he wore, armor that has never been seen before, all in black color." Glenn said his thoughts out loud.

"And? What's your conclusion?" Lambert urged Glenn.

"His movements, strengths, and willingness to kill… If I may be frank, your Majesty, I see a child soldier and a very effective one." Glenn exhaled a breath he didn't know he held.

The room was silent. The implication that they have an enemy in their midst was worrisome. Even if the boy wasn't an enemy, no one was trained young enough to be on the levels of a Holy Knight at what looked to be the young Prince's age. Dimitri was only fourteen!

"However, if that was the case, he might be special. None of the assassins last night seemed as young as the boy. On top of that, they all seemed to be physically normal," Lambert countered.

"While true, differentiating himself from the others in that way would help make him seem different," Glenn claimed.

"Um, am I allowed for this type of talk? I'm just a doctor." Mehmet gulped, seriously feeling out of his depth.

"Oh, you're fine. We're just throwing ideas around." Lambert said absent-mindedly. Glenn's case was certainly strong. However, there was still one other person in the room. He glanced to his side. "Patricia, your thoughts? You were with him the most."

Patricia was silent for a second. She opened her mouth, only to close it the next moment. She took a deep breath. "I trust him. When we were running towards the camp, his eyes were serious, desperate to get me to safety. I know that your case is compelling, Glenn, but you weren't there."

"I understand, Patricia. It was the same with Rodrigue with me." Lambert half-smiled, reminiscing the past. "Why, he jumped and saved me back in Sreng. It was right there and then that I decided that he would be my right hand."

Lambert stroked his chin and narrowed his eyes in thought. "If anything, his crass is just the same as when Rodrigue was younger."

"Impossible! Father could never be so disrespectful!" Glenn shouted. This would be a moment that Glenn would try to forget, but never could. Whenever he remembered, he'd always groan, as if the memory dealt him physical pain. How could a knight yell at his King?!

Lambert's eyes widened in disbelief, only to be replaced with a knowing smirk. "Did Rodrigue never tell you? Well, I suppose those days would destroy his knightly image; I can share some stories when we get together again."

Patricia shook her head and sighed. "Dear, don't embarrass Rodrigue in front of his son, especially when he's not even here."

"Sorry, sorry, I can't help it. Old memories are fun to remember." Lambert laughed. "Still, back to the main issue. The boy will be kept under surveillance. Glenn posed serious issues that we can't look away from, but on the other hand, I will be eternally grateful for saving Patricia. Glenn, have two men be posted in the room. When he awakens, have one of them get us. I have questions to ask and Patricia will likely want to say her thanks personally." Lambert glanced at Patricia, which she nodded to.

"That adjourned, let's get out of here. I want to see little Dimitri again." Lambert began walking to the door, followed by Patricia, then Glenn, and then Mehmet.

The door closed.

'Hmm, my position isn't terrible, but it could be better. I'm in the king's good graces, but certainly on thin ice. I'll need a good cover-up story. On top of that, scars on my body? If I'm as young as I should be, there should be no scars at all. It should be a few years before I joined the Holy Grail War.'

Emiya started a Structural Analysis on his own body. He can't exactly wake up just yet.

'These wounds… These were from my fight with Shirou and the Golden King. I see, it really is my own body, just turned younger and kept all my damage. How should I explain those?

'Wait, I do have a story, one I could connect with everything I know and don't know. Still, no sense is waking up just yet.'

The door creaked again, and footsteps entered the room.

'Must be the guards Lambert mentioned. So far, I know I'm in an area called Duscur, a place that neighbored a place called Faerghus and Adrestia. Presumably, Duscur looks different from my current self. The enemy from before seemed to be an unknown. They believe me to be a child soldier. They're not exactly far off though. There are also the new spells, Recover and Restore, which sound like healing spells.

'With this… I have my story.'

Two guards entered the room, only to hear the child groan in pain. One of them rushed back outside as the other tried to help the child.

Lambert, Glenn, Patricia, and Mehmet entered the room. They saw the boy was laying down, with his eyes closed.

"Your Majesty," the guard bowed, "He was awake only a few moments ago."

The boy grunted and opened his eyes. They were greeted by the boy's eyes-

'Heterochromia. Gold on his left, and gray on the right. Lambert noted. Were they like that before?'

The boy tried to sit up, and the guard helped him up. The boy did his best to bow, given his circumstances.

"Good afternoon, young man." Lambert began with a friendly smile. "Do you have a name we can call you?"

The boy tilted his head to the side. "Nameless. I do not have a name."

Everyone's eyes widened in surprise. Nameless?

"Okay… Where are you from?" Lambert pushed onward.

"I don't know. All I remember was that they kept me in a room for a long time." The boy closed his eyes as if he were remembering something.

"They? Who's they?" Lambert asked.

The boy looked up to him. "The people with the hoods. I don't know what was wrong, but they somehow forgot to lock the room like always. I left and followed the noise. Everyone was bustling around. I saw that they were gathered in a single room and were stepping on top of a magic circle. With nowhere else to go, I used the magic circle they were using. The next thing I know, I was surrounded by fire. I was here, and I-I was free." His body gave out and he lied on his bed, breathing heavily.

"What exactly did they do to you? We saw the scars." Lambert grew even more curious. The picture wasn't pretty, but he had to see it.

"I remember the tables and chairs. They tied me up and-and… There was so much blood. If I fainted, there would be more cuts on my body when I woke up. They just kept adding things to my body. They changed me. One day, I was suddenly able to do this." The boy lifted his hand. Surprising everyone but Patricia, a sword formed from electricity. And now that everything has calmed down, Patricia could see lines crawling on his skin. The swords and lines quickly disappeared, and the boy lowered his hand. "Ever since that day, they sent me out to track their monsters, and then kill their damned mistakes. Once that was done, it was back to the room for me."

"Did you know where you were?" Patricia asked this time. She was afraid that Edelgard was in the same position, forced to do these horrible things.

"No, and it didn't matter. They used the magic circle from before and the area was always different. I tried to run at some point, but they always knew. The operations were always worse at those times. I stopped trying to escape and just went for my mission. I could never escape back then.

"I'm free now and I don't want to go back." The boy looked at Lambert. "Never again."

"Of course. We'll keep you safe." Everyone's eyes shifted to Patricia. "Did you see anyone else from where you were? Another child perhaps?"

"I'm sorry, but no." The boy shook his head. "I was the only one. It was always the people in hoods that talked to me if they ever did."

Patricia paled.

Lambert took note of it and decided this had gone long enough. "Thank you, young man. You should go and rest more. I promise you that nothing will harm you here." He shot the boy a smile and moved towards the door. Patricia, Glenn, and Mehmet followed him and exited the room. The two guards stayed inside the room. The boy fell asleep, lightly snoring.

The group left without thanking the boy, their minds flooded with new information.

"Doctor Mehmet, what do you think?" Lambert asked as soon as everyone was outside the door.

"Amnesia before his containment, most likely due to the stress in his experimentations. It's certainly plausible; I've seen similar cases in some war veterans." Mehmet began. "On top of that, the scars coincide with him fighting against so-called monsters. However, I've never seen such monsters."

Lambert grimaced. He knew of these monsters, gigantic animals that usually required multiple consecutive attacks to win. They've been appearing slowly throughout Fodlan. If the boy was to be believed, he called them their mistakes, then these monsters are manufactured, and that there has been more than originally thought. The only ones that knew were the higher-ups, like King Lambert and Emperor Ionius IX himself.

"Thank you, Doctor Mehmet. It was enlightening to hear the words from an expert. Is there anything else on your mind?" Lambert asked.

"Thank you, Your Majesty. I have none at the top of my head. However, I will let you know if anything happens. Will that be all?" Mehmet bowed.

"Yes, thank you. Glenn, Patricia, join me to my room," Lambert thanked Mehmet and began walking to his guest room.

Once inside the guest chambers, Lambert asked that Patricia cast a Silence spell around the room.

"Glenn, what I am about to tell you never comes out of this room. Only a limited amount of people knows what I am about to tell you," Lambert began ominously and sat on a chair. Patricia followed, but Glenn remained standing.

"Of course, Your Majesty." Glenn accepted, standing at attention.

"At ease, Glenn," Lambert sighed. Glenn was too much of a straight arrow. "Those monsters that the boy mentioned, those are real. They do exist."

Glenn tilted his head. "Really, your Majesty? How come no one has seen any around?"

"Because Rodrigue, along with Gustave, usually go on expeditions to kill the ones that do appear. If what the boy said is right, he also hunts these monsters. The implication, however, is worse: these monsters can be made. It requires a severe amount of power to penetrate their skin, and on top of that, they seem to heal at certain points and must continually be attacked.

"As for who knows, only the Adrestian Emperor and Prime Minister know in the Adrestian Empire while Gustave and Rodrigue from Faerghus. Of course, this includes whatever soldiers they bring in with them for subjugation. Archbishop Rhea knows as well, but the Monastery is considered neutral ground; they can't exactly bring in an army. We have had more well-known knights like Alois, current Captain of the Holy Knights of Seiros, and more recently, the newly knighted Distant Archer, Shamir. However, we can't count on them all the time. They're far too well-known and them constantly disappearing from the Archbishop's side would raise red flags. We absolutely cannot have civilians learn about their existence." Lambert finished answering.

Glenn finally caught up, and paled. "Then this means that this issue has to be brought up to Lady Rhea."

Lambert nodded. An unknown enemy and finally a source to all these monsters. Maybe they can put an end to all these problems.

"Glenn, leave us; I'd like to talk to my husband privately." Patricia suddenly spoke.

Glenn saw Patricia's seriousness and could only nod in response. He bowed and left the room.

"Something occupies your mind, my love. You don't usually take control of conversations like that. I noticed you did it as well with the child." Lambert pondered.

"I-I must ask first: did you know Edelgard, my daughter, was in Fhirdiad along with Volkhard?" Patricia hesitantly asked.

"I knew Volkhard was Faerghus, not necessarily Fhirdiad. I can't exactly keep track of everyone, as much as I'd like to. And no, there was no Edelgard with Volkhard. There was a child, brown hair in a double ponytail with lavender eyes, but her name was El. She was introduced as Volkhard's daughter." Lambert was confused. Of course, he knew about Edelgard; Patricia told him about her before their marriage.

Patricia paled.

Then, in realization, his eyes widened. "That was Edelgard, wasn't it?" Patricia could only nod as she was brought to tears.

"H-How? How could no one have noticed? Did you not see them at least once?" The number of coincidences, or perhaps the lack of, was astounding. Patricia and Volkhard should have met at some point. They had an entire year, at least!

"I don't know! Cornelia was always with me ever since I arrived in Faerghus. She was my guide… She even said…" Patricia's eyes widened, and then her face morphed into fury. "She knew… She knew Edelgard was here. On top of being the middleman between us, she made sure to keep me away from her too. I can't believe I trusted that whore!" She heaved, so close to losing her composure.

Lambert was confused. Cornelia? She was the Fhirdiad Court Mage, and has been for ages. If what Patricia said was true, then she had to be apprehended. He cautiously asked, "What did she do, specifically?"

Patricia, brought out of her anger, whipped her head towards Lambert. She fidgeted and looked away in guilt. "I... I must start from the beginning. There is no other way.

"Two years ago, I received news that Edelgard fell to enemy hands. In my desperation, I turned to Cornelia first, instead of you. She was always there, and I trusted her as much as I did you. She revealed that the enemy's name is Those Who Slither in the Dark. On top of that, she… She told me that it was you that kept Edelgard away from me, that you were with them. I believed her."

Lambert stared in disbelief. Surprise at her words, sadness that she believed he would keep anything from her, and panic at what her words implicated her. He opened his mouth to say something, but Patricia held a hand to stop him.

"Please, let me finish my story. I know now it was such a blatant lie. I should have remembered that you loved me. But that's all in the past; I fully believed her lie and from there, began hating you."

Lambert slumped in his chair, placed his elbows on top of his thighs, put his hands together, as if in prayer, and then head on his fingers.

'My wife hated me. I never noticed it, nor the fact that she was in pain. Lambert was horrified. I'm a terrible husband. If only I talked to her more, if only I kept an eye on her rather than have a middleman like Cornelia.'

Lambert grit his teeth. 'That woman. The first thing I do when I arrive is to find and apprehend her. Lying to the royal family, staging a divide between the King and Queen Consort should be treason enough.' His hands tightened their grip on his head to massage an incoming headache. But there was an ongoing matter to deal with, and she was right in front of him.

He looked up to Patricia. "There's more, isn't there? What is it?"

Patricia took a deep breath and exhaled. She repeated it once more before she continued. "The assassination from two days ago was orchestrated by Cornelia and me. I gave her everything I could get about the expedition. Routes, rotations, priority targets, retreat strategy, everything."

The truth was revealed, and frankly, Lambert wasn't surprised. He could connect the dots, especially after everything that Patricia said. It made sense of how the enemy seemed to know everything about Lambert and his army. Of course, they seemed to know everything because they did know everything. The only thing they didn't know was how strong the Knights would hold against their assaults to get the royal family to safety.

'Goddess, my chest hurts.' Lambert took a couple of deep breaths to help ease the pain. It did, but barely.

As much as he wanted to hate Patricia, he couldn't, not really. He completely understood where she was coming from. If another country kidnapped Dimitri, he'd be furious, too furious to listen to reason. He'd drop everything and wage war, possibilities of victory be damned. He'd keep going until he was sure Dimitri was safe and sound, even if he'd carve a bloody path through Fodlan. He loved Dimitri too much.

Patricia matched that love, he knew this. Lambert saw it whenever she interacted with Dimitri. He wasn't her biological son, yet she loved him as if he were. Lambert was always grateful for her acceptance of Dimitri.

Still…

"I love you, Patricia. I hope you know that." Lambert began as he looked straight at Patricia's eyes. "I cannot hate you, even after everything that has happened. But know that things have changed. I'm hurt that you would think I would lie to you. If Edelgard arrived in Fhirdiad and I knew she did, I would love her as if she was my own daughter, just as you did to Dimitri." Patricia closed her eyes to stop the tears from flowing, but she failed.

Lambert sighed. It hurt him to see her cry like this. "Enough. We can speak more about this at a later date. Is there anything else you'd like to say?"

Patricia shook her head. The room was filled with silence, only broken by Patricia's sobs. Lambert stared at the ceiling of the room, deep in thought.

He needed to think about what to do next. There was the matter of returning to Fhirdiad as soon as possible. He had to hunt down Cornelia too, but given everything that has happened, he wasn't sure if Cornelia was still in her castle.

Then, he remembered the boy's words. 'He could track monsters. What stops him from tracking humans?' Lambert abruptly stood up. Patricia looked up to him in surprise.

Lambert looked down at Patricia. "How would you feel about getting back at Cornelia?"

Emiya was resting on top of his bed, watched by two guards.

'Heh, I think that was good enough. Being a Counter Guardian was definitely what I just described: I was nothing more but a glorified janitor for humanity's mistakes. The tables and chairs are a bit embellished, but the blood was certainly there every time I was summoned.

'It's too bad that they didn't continue talking outside. For now, it's a matter of just waiting for their verdict. I gave them the escapee story and by affirming parts of their story, it should sound believable. If only they'd take it. Letting me go might be too much to ask, but I don't have a lot to work with. I'll need my armor too. The native armor might not be strong enough for me and most likely be worse all-around.'

He continued to rummage through his memories and thoughts, to see if he missed any detail. Nope, it seemed like he played his best without saying too much to implicate himself as an enemy, which he isn't.

The door opened and he opened his eyes.

"Leave us," Lambert ordered the two guards gruffly. The two bowed and left, missing the fact that Patricia's eyes were puffy red, and that Lambert seemed ready to kill something.

'Did she finally tell him her role in all this?' Emiya thought.

"Hello again, sir." Emiya started.

"Hello again indeed. You gave us so much information to ponder that we missed one of our original goals in visiting you." Lambert responded.

"And that is?" Emiya asked. 'Did I do something?'

"To thank you for what you did that night. You only just escaped and instead of using the assassination attempt to truly disappear, you ran back and protected us. You even saved her," Lambert gestured to Patricia and Patricia nodded. "For that, we are grateful."

'Yes, I'm safe.'

"However." 'Damn it, I celebrated too early.' "You mentioned that you tracked and killed these monsters." Lambert's face tightened into a frown, and his grip tightened. He was going to kill something. "I would like to ask for your services. Find me a human alive, and I'll get you anything you want. I swear this as Lambert Egitte Blaiddyd, King of Faerghus."

Emiya could only stare in disbelief, and before he could stop, chuckles left. The chuckles became crazed laughs as he threw his head back. He suddenly looked back at Lambert's stony frown.

"One prison to another? Fine, I'll take it! Just one last mission; Promise me I don't have to do anything like this anymore. That's my condition, that's what I want." Emiya's face was furious as he grit his teeth. 'How many times did I tell myself that? How many times did I try to convince myself that-'

"On top of finding the target, Cornelia Arnim, I ask that you find a girl named Hapi. She has been abused and experimented on by your target for her Crest." Patricia abruptly added and Lambert's head whipped to face her.

'What?'

"When were you going to tell me about her? Cornelia was experimenting on someone?" Lambert asked incredulously.

Patricia faced Lambert as she grimaced. "It happened in the past two years. You know I couldn't exactly… You know…"

The two argued, missing the horror on Emiya's face.

Experimentations all for her Crest.

Experimentations on her power.

Senpai.

Suddenly, Emiya's eyes were filled with purple hair and a red-pink ribbon. He choked trying to breathe. His hands slowly twitched higher, reaching for the hair and ribbon that he saw.

Lambert and Patricia stopped talking between themselves as they saw the boy reached out in the air. Of course, Patricia didn't know what was going on. She was a noblewoman. She fled the Adrestian Empire and never fought on the battlefield before.

Lambert, however, understood. 'He's reliving a memory.' He's seen this enough when he came back from the war from Sreng. Soldiers would jump in the middle of their sleep, even when they were safe in the middle of the barracks. Some soldiers refused to wield weapons, opting to leave the army, never hearing from them again. Of course, he was like that too when he just started. However, with Gustave watching over him and Rodrigue by his side, he always had someone to confide with or protect his back. As he grew up, the tendency stopped, and life carried on for him.

'What happened to him to cause such things?' The child must have had gone through wars, or something traumatically similar.

Lambert looked at Patricia. "Go find Mehmet! Tell him the boy is reliving a memory!" Patricia nodded and rushed towards the door.

But, before Patricia could open the door, the child's voice rang out. "That won't be necessary." Both adults looked back at the boy. What? The boy was looking straight at Lambert, his hands gripping the mattress blanket as if the blanket was going to run away.

"I'm fine," the boy reassured them, as useless as it was. "Do you have something that came from her? Anything works, items made by hand, or anything made by metal, work best though. When do I start?"

Lambert took a step back. The boy's face was filled with rage and conviction, and it surprised him.

"You can start soon, in a few days." The boy nodded.

Emiya nodded.

'Soon. I failed to see it the first time. I won't fail again.'

Author Notes:

Happy New Year's everyone. I made a slight mistake in the first two chapters.

Lambert should have been referred to as "Your Highness." Dedue did this a lot in canon towards Dimitri.

"Your Majesty" is one for those related to gods/divine or were chosen by said parties. In Fodlan, Emperor Ionius IX would be referred to as such.

2021/02/05 Edit:

EMIYA - Emiya

Added description of Mehmet, but it's only slightly there. I'm not good at making OCs.

Formatting has been changed.

Miscellaneous grammar or spelling errors have been changed.

No major plot changes.

Thunderstrike Catherine has been changed to Alois, current Captain of the Knights of Seiros. This is because Catherine became a Knight of Seiros since she ran away after being blamed of the Tragedy of Duscur. She ran away and was saved by Rhea. At this point, Alois has been Captain for years now.

Jeralt also now has a daughter, female Byleth, age 17. At this point, she has experience as a mercenary and has only started to get the nickname Ashen Demon.

2021/02/19 Edit:

As someone pointed out, it's supposed to be Majesty for both kings and emperors. I made this error because I thought Dimitri was called "Highness" in canon, even past the timeskip. However, this is wrong because Dimitri became king after the final map and Dedue calls him "Majesty".