One hundred years later, Kurotsuki Yato; the son of Kurotsuki Yasuna and Kurotsuki Kiyomi was born with white hair.

As every Kokketsu-users has pitch black hair, blood red eyes with stilted pupil and snow white skin, Yasuna was overjoyed that his step-father had been born as his son, right after he saw his eldest´s white hair.

After being contacted by a very special way that was taught by Mangetsu, the whole separated clan united in Ōyama no Kuni, Makai and began to rise their would be Third Clan-head in secret.

Unfortunately the Kurotsuki Clan, which was already in danger of extinction, was discovered by Ōyama no Kuni´s Tyrant King, Ōyama Ganzō. Afterwards of learning that the All-Powered Kurotsuki Clan is in his Country, Ganzō went to ´welcome` them and ´offered` them to work for him, if the Clan wouldn't agree, he threatened them that he would inform to the whole world that the Kurotsuki Clan is in his Country.

Without a choice, as they couldn't handle any kind of fighting again, Yasuna bitterly agreed with a condition, that the clan will remain unknown.

After the treaty was signed Ganzō began to sent difficult missions form B rank to S rank, even SS rank and SSS rank (like assassinating enemy countries important individuals and stealing high valuable items/treasures and so on) to the Kurotsuki Clan. As the most missions was over S Rank, it was getting even more difficult for the Kurotsuki Clan soo much that their numbers began to lessen even more.

When Yato was 10 years old, his father had been captured in action and sentenced to death.

After learning about his father´s would be fate from his animal spies and being stronger than most adult demons, Yato went all alone to where his father was being held captured to save him before he was killed. Fight after a fight, after reaching the cage that his father was held in, he finally managed to free his father from prison. As they were nearing the border of the country Yasuna had been held captive, both of them was attacked by Kaminari no Kuni´s King, Kaminari Raiten himself.

Being a very strong Sensor Type, after sensing where the father-son were running off, Kaminari Raiten created a lance of lighting made with Junketsu. Even being on top of his castle, which was at center of Kaminari no Kuni, he threw the Raiten Shinsō exactly to Yato.

Sensing that the lance was aimed at Yato rather himself, as a means of protecting his son, Yasuna got behind Yato and after turning towards his son, Yasuna took the blow to himself. Before the lance could cut Yato´s right side of his neck more deeper, after taking Yato in his embrace, Yasuna transported near their Clan Settlement's outskirt, leaving the lance exploding behind in Kaminari no Kuni. Before he could pass out and die, Yasuna sealed half of his soul into his unconscious son, Yato, to protect him for the coming years.

After the deaths of both of his uncles and clan's important members, by the decision of the whole clan, Yato was made the Third Clan-head of Kurotsuki Clan at the age of 13.

One day, when a mission was given to his twin brother Yaō, Yato went with him. Their mission was an S ranked assassination, which they needed to kill a heir of enemy country.

Knowing this was new for his brother and rather than letting Yaō doing it, Yato began to approach his prey. Their prey, Akabara Shinku was the 11 years old heir of the Vampire Kingdom. Even then, that didn`t mean anything to Yato as he has a clan to protect.

While Yato was advancing to his prey in shadows with Yaō following him from behind. Even being careful, Yaō unintentionally stepped on a branch that laid on the ground of the forest they were in, which alerted their prey of their presence. After being startled, Shinku fired an arrow made of Junketsu towards the exact location of where the snapping sound came from.

At the same time as saw the arrow being fired towards his twin brother, Yato transported next to Yaō. After pushing his younger twin to the side and getting in Yaō´s place, the Junketsu made Arrow gashed Yato´s left waist deeply and while suppressing his pain, as a payback, Yato fired an arrow of his own blood towards Shinku´s heart and killed him.

During their return, because of the drops of Junketsu that gotten inside his body from the lethal wound, Yato collapsed to the ground. After placing Yato on his back, Yaō dashed back to their home even faster.

Right after reaching before the gates, knowing their mother was a excellent healer, Yaō let out a roar to alert her. After coming out to see the cause of the roar with most of the other confused clan-members, Kiyomi saw her eldest son´s condition and before it could get even worse, she healed Yato as much as she could since the wound was going to leave a scar.

With each failure of the mission´s, Ganzō began to deem the treaty pointless and to get rid of useless tools, he hired a group of hunters that were specialized in blood techniques and curses. Since the Kokketsu-users could only be killed by Junketsu coated weapons or by strong curses. Knowing Yato´s strength very well, Ganzō created a trap that Yato would certainly fall. The first part of his plan was to give a mission with a high rate of failing to Kiyomi, thus leading to her death. Then sending a hunter near the Kurotsuki Clan Settlement to observe the Clan, especially Yato.

As he was the Clan-head, Yato always checked the missions to whom the mission was given and what sort of mission it was. As he checked his mother´s mission for five times, Yato could´t believe that Ganzō would give a mission with an obviously high failing rate. After calling his mother to his office and showing the given mission to his mother, without any type of fear and with an absolute determination, Yato told to his mother that he will take the mission in her place.

Knowing that her eldest son was intending to sacrifice himself for her, completely unlike her and for the first time ever, Kiyomi slapped Yato on the cheek. After she slapped Yato, Kiyomi shouted to him that she didn´t want him of all people to sacrifice himself for her, as he was the Hope of their Clan and even being the strongest Kokketsu-user he was still far too young die.

Before getting out of the office, after turning her back towards Yato, Kiyomi told him; that she is entrusting the whole Clan to him, the same way as her husband did. When she leaved the room, she had also leaved a very flabbergasted Yato behind.

Two weeks later, as his mother had been away too long for his taste, knowing where she had gone, Yato went there to bring his mother back. As he was going to Taki no Kuni, on the way to his utter shock Yato found his mother laying on the ground near the riverbank, dead.

As he checked her pulse twice and found none, after lifting Kiyomi up in bridal style, Yato returned to the Clan while carrying her in silent tears. In October 10th, as he become 15 years old, after the burial of his mother and having enough with all of it, Yato decided to murder Ganzō.

During nightfall, after getting ready for his self-appointed mission, Yato began to dash where Ganzō was living, without knowing it was a trap. The observer hunter that was observing Yato, contacted about it to his own boss immediately, which after learning about it, Ganzō began his second part of his grand plan.

As he had ordered two of the hunters to create a replica of him, he ordered to the other 13 to set exploding seals all around his throne room, that would explode five seconds after someone entered. After they were done, Ganzō went to Kurotsuki Clan´s Settlement at the top of a mountain trough different way, to kill every remaining Kokketsu-users.

After sneaking inside the throne room, Yato began to advance towards the sleeping form of Ganzō with a very murderous killing intent. As he beheaded Ganzō, Yato jumped hurriedly back when the corpse turned into a splattering blood mass. While he was thinking about this, just by pure instinct, Yato suddenly dashed towards the window of the room and jumped out before being caught in explosion. Even then he was still hurled over the cliff because of the shock wave. As he had crushed to the ground back first hard, even the scar on his waist was opened, Yato still continued to dash towards his Clan Settlement with being full of bad feeling.

But even then, no matter how much he had dashed, Yato was too late.