Time in a collapsing world

1469, Europe, destiny.

At the gate of a luxurious mansion, an equally luxurious carriage slowly approached. Before it completely stopped, a white-haired girl with long braids jumped out of the carriage. She was wearing the recently improved Valkyrie uniform—a white waisted swallowtail top with golden stripes, a V-neck, a golden cross emblem, symmetrical wing patterns on both sides of the chest, and a destiny emblem hanging between the collarbones. Her lower garment was a black short skirt and white stockings with golden patterns.

The cuffs of his clothes and the thighs of his white stockings were stained with purple liquid, as if he had just retreated from the battlefield against Honkai.

"Miss, slow down!"

An old man in a black robe followed slowly from behind, with a hint of helplessness in his tone.

"No! I finally got back, I have to hurry up and go see Li!"

The white-haired girl kept walking and didn't knock when she arrived at the door. She walked straight through the door in front of the stunned servants inside. Her movements were so skillful that it was obvious that she had done it countless times.

"..."

Watching the "intruder" rushing straight into the mansion, the servants could only pretend that they saw nothing. They quietly opened the door and welcomed in the black-robed old man and several Valkyries who were guarding him.

"Li!"

With a bang, the door of the mansion was pushed open. The white-haired girl casually put the key in her pocket and then rushed straight to a room on the second floor.

"Sister Karen, my brother is not at home now~"

A door in the corridor on the second floor opened, and a girl with two small pink ponytails appeared. She was wearing pure white lace pajamas and holding a book in her hands, and had just turned to the last page.

"Rin, long time no see. Can you tell me where your brother went? I'll treat you to dessert later~"

Kallen, who had matured a lot compared to previous years, did not stop because of Yae Rin's words. Instead, she first confirmed that there was indeed no one in her brother's room before returning and standing in front of her.

"My brother went on a date with my sister."

Yae Rin remained calm, her pretty face full of seriousness, but her deep blue eyes could not hide the cunning.

"Dating?"

"Hmm~ Just what you think, Sister Karen~"

"Really? I don't believe it. Ri and Ying are brother and sister."

Kallen shook her head and hugged her chest, making her breasts, which had matured sufficiently in recent years, stand out particularly well.

"Really? Who says siblings can't be together? Besides, my brother and we aren't biological siblings."

Yae Rin stared at Kallen's chest for a long moment, then glanced down at her own. Well, it seemed a little ordinary in comparison.

They are all girls, so why is Sister Karen so well developed?

And the same goes for my sister... I always feel like my sister and I aren't that close.

"Since you won't tell me, Rin, I'll have to ask Grandpa Arthur to find someone."

Kallen ran downstairs in a hurry again. Arthur and the Valkyries who had just come in from the door didn't even have time to rest, so they had to go back with this old lady.

"Sister Karen, what a joke! Has she forgotten that her sister also went to the frontline for training like her and hasn't come back yet?"

Yae Rin shook her head and was about to go back to her room, but she didn't expect another guest to come. Without any servant notifying her, a pink-haired girl wearing the same uniform as Kallen walked in. Her blue eyes were extremely sharp, her fox ears swayed slightly, and she had a cherry-pink long sword on her waist. As she walked, the air seemed to be filled with the fragrance of cherry blossoms.

Just by the smell, Yae Rin was able to determine the other person's identity.

"Sister, you're back too? It must be hard on the front line, right?"

Her attitude was slightly more enthusiastic than when she was facing Kallen. Yaezaki ran downstairs to get her luggage.

"Fortunately, the Honkai beasts on the front line are not a threat to me, but... 'also'? Who else came back before? Kallen?"

Yaezakura put the small bundle aside, and her sharp eyes instantly softened when she looked at her sister.

"Yes, she just came back, and..."

"and?"

Yae Rin's eyes rolled around, "And she even dragged her brother out shopping, saying that she won't be back until tomorrow morning~"

"..."

There was a slight sound of the long sword at the waist being unsheathed, but it was quickly suppressed.

"Where are they now?"

Yaezakura asked gently.

"I don't know... maybe on the street? Or maybe in Sister Karen's room?"

Yae Rin held the book in one hand and touched her cheek with the other, recalling with some distress.

"Rin, I'm going out first. I might come back in the evening, or maybe..."

"Hey! Sister, wait, I was just kidding!"

Yae Rin only felt a flash before her eyes, and her sister who was originally standing in front of her disappeared. Only the faint scent of cherry blossoms left there proved that she had just been there.

"Really? Everyone is so impatient~"

As time goes by, the little girls have grown into big girls. Their childish looks are gone, replaced by youthful looks.

……

At the same time, in the mansion of the Apokalis family, a pink-haired boy who looked about eleven or twelve years old looked in a certain direction as if he sensed something, with some confusion on his pretty face.

"Is someone looking for me?"

"Li, look at this, it's amazing!"

A blond-haired boy of about 17 or 18 years old rushed out of the room. He had fair skin and beautiful features, and his long hair was tied into a ponytail and draped over his left shoulder. He was wearing a dirty white shirt with patches of black stains on it.

"What's got you so excited?"

Yae Ri looked over with amusement, this guy was obviously the oldest among the kids around her, but he still seemed a little impatient in front of her.

The blond-haired boy excitedly waved a worn leather-bound book in his hand, his eyes sparkling as if he had discovered a treasure.

Spreading it out on the table, Yaeri saw that it was covered with complicated patterns and symbols, and it looked like some kind of ancient mechanical design.

"Well……"

Looks like a satellite?

"This is what my family found when they were exploring the ruins. It looks like an ancient Honkai energy mechanical device. If we can restore it, maybe we can..."

Before the boy could finish his words, Yaeri patted his shoulder.

"Come on."

No matter how talented a person is, it is unlikely that he can build a satellite directly in this era, right?

"Yes!"

However, the boy really thought that Yaegiri was encouraging him, and his body seemed to be filled with endless motivation. He planned to spend the next few months staying in the room studying this thing, except when his family members called him over.