It was Saturday in the afternoon in Tokyo. Right now we see two married couples in their twenties currently walking on busy street of Tokyo while holding each of their five years old son hands. The husband has black hair, and dark brown eyes his name is Nagumo Shuu, while his wife name Nagumo Sumire has brown hair, and purple eyes, while their son Nagumo Hajime has the same appearance of his father but his eyes is much more lighter.

"Mommy, Daddy…" Hajime called both of his parents.

"Yes, Hajime?" His mother response with motherly smile, while his father look at him in question.

"I'm hungry… I want to eat…" the five years old boys grumble while letting go his parents grasp on his hands, as he touches his tiny growling stomach. His parents can't help to let out chuckle because how cute he was, and the same Hajime's make a lot point both Shuu, and Sumire feeling hungry as well.

"Don't worry champ, I just know the right place!" his father said with a confident smile, as he rub his son hair with his hand.

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After few minutes three of them arrive at the location. Hajime look at the restaurant in front of him it was western-style restaurant by the name of 'Wisteria'. Hajime look both of his parents as they gave them gentle smile.

"Let's go inside." Said Sumire as both her, and his husband push open the glass doors as three of them enters the restaurant. When inside Hajime can heard a sound welcoming them.

"Welcome!"

Immediately Hajime see two person approaching him, and his parents. One is a bit muscular man with black hair, and blue eyes wear while chef uniform, and the second one is beautiful woman with long chestnut hair, and green eyes while wearing waiter uniform, the couples names is Sonobe Hiroyuki, and his wife Sonobe Yuuri and their the owner of this western style restaurant, when two of them see Hajime's parents and they can help to let out excited smile.

"SHU!" said muscular chef man.

"HIRO!" Hajime response with same voice, and then two of them gave each other bro handshakes.

Hajime can't believe what he see, so he decide to ask his mother for what going on, or so he thought…

Right now his mother currently hold both hands of the chestnut hair woman. As two of them seemingly happy see each other.

"Yuuri-chan!"

"Sumire-chan!"

Hajime can't help to face palm seeing both of their parents, at the same time toward the two of adults. Four of them talk about like 'How's business been going?', 'I heard you got promotion?', and 'I buy your current Shoujo Manga' something like that leaving the five year old boy in the state confusion.

Eventually they conversation put on a hold as the Sonobe's couples notice Hajime standing between their parents.

"Is this your son? He's so cute!" said Yuri while squealing as she kneel down in front of Hajime while pinching his cheeks. This cause Hajime feel little bit uncomfortable, Hiroyuki notice that his wife make the young boy uncomfortable decide to stop her.

"There, there honey. You make him uncomfortable." After hearing that Yuri stop pinching Hajime and apologize to him. Hiroyuki crotch down in front of Hajime as he place his right hand on the young boy shoulder while giving him gentle smile. "Sorry about my wife, she can be too excited over something. So I hope you still willing to eat in our restaurants." Hajime didn't understand what Hiroyuki words since he still a five years old, but since his parents already bring him here's so he just nodded at the man words with resulted put a smile on the couples face.

"I can't wait to introduce you to Yuka?" said Yuri with smile on her face as she mention about someone else.

'Yuka…?' Hajime though in wonder.

"Oh right, I heard both of you had a daughter. I also can't wait to see her!" Sumire said while squealing wanting to meet both Hiroyuki, and Yuri daughter.

"Yeah me too, I want to see her as well." Said Shuu as he nooded in agreement.

"How about this, dear why not bring Yuka here, then we can introduce her to our guests here? Maybe she can become great friend with Hajime-kun here." Suggest Hiroyuki to his wife too bring their daughter here, and introduce her to Hajime and his parents.

"What a great idea dear! Wait for a second okay?" and with that Yuri went to the back, and bring their daughter here.

Later, Yuri is back this time bring someone with her. Hajime tried to get closer look, and see a girl the same age as him being held by her mother, her daughter has the same appearance like her with same chestnut hair but much shorter, and her green eyes.

"Your daughter is so beautiful!" Sumire squealed seeing the sight of Hiroyuki, and Yuri daughter.

"She sure like her mother." Shuu commented with a smile on his face.

Then Yuri bring her daughter closer as both Hajime, and the girl now in front of each other.

"Hajime-kun this is our daughter Yuka, I hope both of you can get along, and became great friend." Yuri said with smile on her face as she introduce her daughter to Hajime.

"And Yuka, this is Hajime our friends son. I hope you as well can get along, and become friend with him as well." Hiroyuki said with smile to her daughter while ruffle her hair.

"Yes Papa…" Yuka timidly response to her father.

The two children awkwardly stare each other, because they don't know what to say since this is the first time meet each other. Eventually Hajime decide to break the silence for both of them.

"Hello, I'm Hajime! Want to became friend?" Hajime said with a smile as he raised his small hand for handshake toward the young girl hoping she will accept.

Yuka eyes widened from Hajime words, and his friendly demeanor. But she quickly push that aside, and accept the young boy handshake as she smile cutely toward the black haired boy.

"Hmm! I want to!"

And that how Nagumo Hajime, and Sonobe Yuka meet, and became friend till today.

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12 years Later…

Now seventeen years old Hajime, and Yuka currently having the worse thing happen in their live as they alongside their classmate was summon to the Other World and right now both of them currently running for their life to the other side of the bridge that inside the dungeon, while behind them was Giant Monster letting out loud roar as the floor below them began to fall, Yuka grab Hajime hand with her high endurance chestnut hair teen quickly bring both of them across.

"RUN KIDS, IT'S GONNA CATCH YOU!" a shout from older man can be heard across the dungeons telling them to hurry up.

"HURRY HAJIME! WE'RE GONNA MAKE IT!" shout Yuka as she drag Hajime across the bridge, as Hajime tried his best to catch up with her.

Much stronger students are busy fighting with horde of Undead Soldiers, and the other cast number of spells to shoots at the giant beast as they calling them to hurry up.

"HURRY, NAGUMO! SONOBE!"

"NAGUMO-KUN! YUKA-CHAN!"

But then it happen…

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A Fireball Spell misfire, instead shooting the giant beast it was shoot toward two of them. Causing both Hajime, and Yuka to knock down on the ground, they look in shock behind them as the beast start falling down to the Abyss bellow, as the floor below two of them began to falling down. Both Yuka, and Hajime didn't have time to react as they fall to the Abyss bellow of them the other students watch in horror as two of them fall to the Abyss.

Meanwhile as Hajime, and Yuka fall to the Abyss bellow the only they think is about is each other.

"HAJIME!"

"YUKA!"

And with that two of them fall to the Abyss bellow.

A/N: Hey everyone Author here, and this my New Project of Arifureta fanfic let's just say this is chapter 0, so I decide to write it just for fun if you want me to continue this fic just let me know. If you read the content of its yes… Yuka will have massive role here or even maybe the main heroine of my fic. The reason is it's such shame she didn't develop further in original series, or even have more screen time she such underrated character! That why I make her have major role in this, and make Yuka as Hajime childhood friend alongside him fall to the Abyss. If you guys don't like it I'm fine with that.

By the way I have more idea for my Arifureta fanfic, and my plan is to have more character that became Hajime friends in the beginning, and then fall alongside him, and Yuka to the Abyss, and became strong alongside them. Most of them are my OC while the other is I believe is underrated character that I believe has potential to be a strong character but didn't have enough screen time for them to shine.

My plan is around 7 to 13 character that will be part of Hajime group that include Yuka as well. But if you want to vote be my guest.

For 7 people (including Hajime, and Yuka)

For 13 People (including Hajime, and Yuka)

Also since this is still project feel free to share your ideas to me I might use it in the future.

Maybe I add more Power system so they can get much stronger.

By the way do you guys want to keep The Harem elements like the original series, or just erase it? Just let me know.

And remember this story merely a prototype I might change it in the future, but Hajime, and Yuka is childhood friend remain the same, as well they fall to the Abyss.

Disclaimer: I don't own Arifureta try to support the author, and the series by reading the original LN or even watch the anime.