Disclaimer: Fire Emblem (c) Intelligent Systems x Nintendo. Not me unfortunately...sigh. The made up stuff I am using from another fanstory. Also the name differentiation is for the original older kids to hide their identity from the public.

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Jerome, Lucina, Mark and Nah had stayed behind to watch Stella. Her quiet breathing was the only noise in the room. As they watched, Mark wondered what his older sister was thinking. Lucina had told him about the anxiety that tortured her when mother vanished. Jerome also told him about the Another Lucina incident.
"Hey Mark, do you think everything will turn out ok?" Nah asked, breaking the silence.
"I hope so", was all Mark could answer to.
Eventually, everyone else left Lucina, who had passed out in tears.

Ylisstol Castle, Main Hall - Court Discussion
"The Ancient of Days is a dragon's heart and specifically the heart of a child of a divine dragon and a … fell dragon" began Tiki.
Everybody panicked: "is it possible to have a dragon like that?"
"To be honest, I thought it was a joke too. However, it seems like that the child exists in our realm because the name of the pendant that materialized on Stella is called "ævinstjörnu", meaning "fairy star". The Fairy Star is said to signify who the Ancient of Days was. It was said that, when the Ancient of Days awakens, the Fairy Star would appear alongside it."

The court was quiet.

"I looked into Stella's heritage. She has Grima bloodline, as you know a fell dragon, but also is the child of a fallen divine dragon... The appearance of ævinstjörnu on her proves the fact. The Ancient of Days is a dragonless dragon , who has immense power and authority. Also, they cannot have children. (?) Lucina and Mark busts that statement since they are her children; however, they did not inherit any of her dragon's blood. They are true humans, although I don't know what kind of being Stella would be considered as, since genetically wise it shouldn't be possible. " Tiki was looking through textbooks on genetics.

"Then what is that Another Lucina looking for?"
"Naga told me there was a world where its lord is the Ancient of Days. An unstopping eternal world..."
"Would Another Lucina's motive be that if Stella got killed, Lucina would become the next heir?"
"But Lady Tiki said they didn't inherit the dragon's blood though."
"Hmm...Another Lucina must be assuming she would inherit it."
"But didn't the girl say before she couldn't kill her mom when Stella had the brand at the time? She seems very hostile about Stella and doesn't treat her like family."
"What does she want from that outrealm, anyways?"
Tiki, with a sigh, said, "That part I don't know...That realm is mysterious already for even divine dragons like I..."

Krom was trying to absorb all the info that suddenly came to light.

"Why the change of heart? And the little two-timer wants to be the conqueror?" Valhart paced around in an aggravated mood.
Krom couldn't use the army on a wild goose hunt. Also, the Seasonal Winds festival was in a week - he didn't want to ruin the festive mood of the public.
"I'll set up higher security around the castle. And change some of the major locks", Krom finally decided.
Some were confused why, but it turns out the Another Lucina had used her time's castle keys when she broke out.

The week before the Seasonal Winds Festival.
Lucina kept watch over her mother and saw much improvement in Stella's health. When would Stella wake again, only time would tell, as the light from the pendant continued glowing.
Just then, Young Lucina barges in shocking Lucina, who was not prepared to see her younger self.
"Auntie Lucy! And Uncle Gerome! ... What are you two doing here?"
"Your dad asked us to watch over a friend." Jerome explained to the younger version of his wife.
Young Lucina crawled onto the bed.
"Daddy was so nice to this lady, but she is hurt again?"
Both then realized Young Lucina still had no idea Stella was her mother.
"But she looks a little better than last time." With that Lucina gets off the bed.
"Hold it, Lucina. Where are you going?"
"I am going to find Mark."
"I'll take you to Mark, but come with us first."

Lucina decided to show her younger self a special portrait. Taking a break, the three came to the grand library in the castle. A trick known to only a few, Lucina, who had discovered by fluke during her time in the fight with Risens, uncovers a hidden switch in one of the bookshelves.
"I tripped and hit my head here. A switch activated hidden art that the castle had stored for ages, but then it got destroyed by all those stupid Risens." Lucina grumbled as she told Jerome.
All the library shelves retracted to reveal hidden portraits in the walls and ground of the library. Jerome was amazed to see the portraits of Ylissean's previous rulers lining each display - even a portrait of the first Exalt was there.
"So Lucina, these are your ancestors." - Young Lucina was amazed - "and more importantly, please look at this portrait."
The trio went by Emelina's portrait and came before the newest one of the collection.
"Wow. It's gorgeous", remarked Jerome.
"Daddy! And...?"
Young Lucina took a hard, hard look at the portrait. A panic noise was heard in Young Lucina's voice. She looked at the two adults in hope that she was wrong, but the two knew Young Lucina understood.
"Mommy?"
Young Lucina bursted in tears: "Daddy said...Mommy...was holding me when I was sleeping at Mr. Donny's house. What happened to Mommy, Auntie Lucy?"

Back in her parent's room, Young Lucina kept looking at the unconscious Stella.
"Your mommy...is hurt. Maybe can you say some nice words to help your mommy to get better? Show your mom, you're strong." Jerome, not believing that he just said all of that, comforted the little Lucina. Young Lucina and Lucina held their mother's hand.
"Mommy, I miss you. Please come back." Young Lucina cried as she hugged Stella's hand.

After calming Young Lucina and Lucina down, Jerome volunteered to take the kid to find Young Mark. However, as Young Lucina placed Stella's hand down, it wouldn't let go...