Long time ago when he was still the King of Ôtake no Kuni, as the frequent visits of many people from worldwide coming to his country just to see him was getting too much, Yato decided to rise the place he was residing on high above to the sky with his control over gravity. In short amount of time the land that was risen to sky began to be know as White-Moon Island of the Sky "Sora no Shiratsuki-jima" together with his castle being known as Big Bamboo Tree Castle "Ōtsutsuki-jō".

After a long time, being the curious child she was, Kaguya got lost during winter while she was wandering around the mountain that was in the back of the astonishing Ōtsutsuki-jō. Afterwards of the setting sun, even in her warm and thick over layered Kimono, Kaguya began to shiver because of the cold. As she was walking forward slowly, before her appeared a horse-sized ten tailed black fox that made her stop in wonder.

While he was in his Kuroko Form, Yato began to approach softly to Kaguya as a means of not scaring her. When he was close enough, Yato laid on the ground around her to keep her warm during the night. After the magnificent fox settled down right behind her, Kaguya began to snuggle and laid her head on his warm and soft neck. As she had fallen asleep, Yato laid two of his thick and long ten tails over Kaguya as a blanket to keep her even more warm.

At the same time as some shines of the sun hit his fury body, Yato opened his sleepy eyes and glanced down to the still sleeping princess in his embrace. Knowing his aged step-son very well, Yato expanded his senses all around him as far as he could to sense Kazuya. After some time of getting a response from Kazuya together with many people he recognized at five o'clock direction, as he knew they were searching Kaguya, Yato began to stand up and together with the aid of his tails, Yato laid Kaguya carefully on his back. Afterwards of securing her on his back to not to fall, Yato began to walk forward carefully.

While he was searching for his young girl in the woods together with his many comrades, Kazuya couldn't help but worry about his sweet princess. When he had heard a bush being rustling behind him, Kazuya glanced back and at the corner of his right eye, he saw his daughter sleeping on the snowy ground. Afterwards of taking her in his arms and glancing around, Kazuya saw his father all in-blood in his Kuroko Form smiling softly at them on top of a nearby boulder. Even after Yato had disappeared to opposite direction, Kazuya was still looking at spot where he had seen Yato with a gaze full of gratitude.

Some couple of decades later, the whole unsuspecting Ōtsutsuki Clan was captured by an Hunter Organization as a means of luring Yato out. But for the relief of the whole clan, their beautiful adult Kaguya-Hime wasn't even near the grounds of the Clan.

As a means of seeing the elegant Kuroko that saved her when she had been a little girl again, Kaguya went one day beforehand to the forest she had gotten lost as child. While she was searching around the places she could think of, as it was getting night, she began to get disappointed and thirsty. To satisfy her thirst, she neared to a stream that was at her right side. Right when she was about to drink some water, Kaguya saw a form coming suddenly out from the waist-length water.

The form that came out belonged to a white skinned, haired and red eyed young man in the same age as her, stark naked. Afterwards of staring at his handsome face and apologizing to the gazing young man, Kaguya quickly turned away. But no matter what she did, Kaguya couldn't help but to try to see his breathtaking eyes again.

Seeing his would be Soulmate turning away to another direction, after apologizing and saying that it was a bad habit of his, Yato went out of the water to get dressed. As she heard from the the young man that he was finished with dressing, Kaguya turned to face him and as his eyes reminded her of the Jūbi no Kuroko, she asked to him if he is the Black-Fox that saved her. While he was happy of being still remembered by her, Yato answered simply as yes.

As a result, afterwards of sitting close to each other, during their talk Kaguya learned that Yato is actually the First King of her country together with his former name, former clan, some abilities that he possessed and his true age being 3020 years old. Some hours later after nightfall as she noticed it was getting to late, Kaguya decided to go back to her home, after telling goodnight to Yato .

While she was getting close to her clan settlement's ancient castle, that belonged to the First King, to her growing nervousness Kaguya saw the lights being out in the houses that was around and as she knew that most of her clan was demons or monsters who stayed up mostly to midnight, she began to get worried.

After going around and nearing the castle gates, Kaguya was suddenly transported away by ten hunters to their castle. But before she was transported, Kaguya saw a very panicked Yato extending his right hand towards her.

At the same time as he had sensed Kaguya's suddenly grown distress, Yato quickly transported near her but even after arriving swiftly, Yato was too late to save Kaguya, as he was still sleepy and stiff after waking up from his 400 years sleep.

As a result of Kaguya's caused disappearance, Yato fell face first to the ground. But before anything could be done from the hunters, Yato began to rise to his knees with his head being down. Before standing upright fully, Yato began to rise his head up slowly towards the scums who had separated him from his soulmate.

While he was rising head agonizingly slow towards them, the nameless hunters began to cringe heavily because of the murderous killing intend they could feel from Yato. As he rose his head fully towards them, the ten hunters saw Yato's very enraged face.

Without giving them any chances to run, Yato unleashed around the environment all of his wildly rampaging black chakra in a very monstrous black wave that began to rob any type of life-force and turned everything into disappearing black dust.

Afterwards of killing the scums, Yato's malevolently shining red irises together with the shining white broken cycles around them disappeared.

Despite killing the hunters, as a means to find his soulmate, Yato turned on both his Byakugan merged left-eyed Shin-Rinne Sharingan together with his right-eyed Rinne Sharingan. Yet, he wasn`t able to tell which was the real Kaguya, as he saw her chakra signature in many but far away places, even that his Byakugan could reach to other distant countries. Although he was getting really frustrated, seeing his Dōjutsus wasn't getting him anywhere Yato turned them off.

Knowing this was his only option, Yato used his All Sensing Ability "Zenkanchiryoku", that allowed him to sense the souls of living and deceased together with the ties and bonds that people shared with each other.

After a while of severe exertion, as he was trying to sense only one single person among the millions of people, Yato finally sensed his Chakra being connected with Kaguya.

After some couple of heavy breathing, Yato created a giant version of himself. Without explaining anything to the summoned clone as he didn't have any time to waste, Yato transformed into a sphere of pure white light and ordered to the waiting giant to throw him with every thing he got to north-east direction where the Inseki no Kuni was.