Note this is not happening in the world of Steel Ball Run but back in the main world.
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A middle aged Japanese man was slowly walking down the darkened alleyways at the end of a long work day.
However for this man it was none other the worst day of his life, his wife had fallen ill a few months ago and has been unable to work for their family and thus it was, for the most part, up to him to provide for his family.
The bills to pay for his home along with the money needed to pay for his daughters tution in one of the best private schools in Kanagawa were causing him to need to work more and more hours just to keep food on the table and the lights on in his home.
But more things kept happening that lead to more expenses which lead to more work and less sleep to the point that no matter how much he worked he wasn't getting enough money so he asked his boss for a bonus, a raised, a paid vacation, something! Anything! And you want to know what his boss did?
They made him out to be the fall guy for a defective production line and someone needed to take the blame and he fit the bill, 22 years of loyal service meant nothing to them as it all went up in smoke.
"Kill them…. It's their fault your in this situation…. Right?…." The dark voice whispered in his mind that has been plaguing his dreams these past few months.
"…. It is their fault….. isn't it….?" He muttered to himself as his eyes started to slowly lose the light in them as madness was beginning to take hold.
"Are you really going to let that thing control your mind Mr. Yamaoka? Do you really have it in you to kill your wife and daughter? Do you believe everything will be fixed with their death?" Another voice rang out, this one unfamiliar, it was calming his mind and allowing himself to regain his clarity that he was beginning to lose.
Realizing what he even contemplated of doing he began to stumble up against a wall as he grabbed his head, "What…. Am I thinking?….. I love my family….. how could I even think that?….." he said as he began to breakdown with tears rolling down his face as he began to weep.
"Because that thing that has been haunting your mind? It is the true cause of all your despair, it's not your darkest desire speaking into your mind Mr. Yamaoka, but a beast that wants you to do the most horrible of things." The voice spoke out to him before he saw from an outsider's prospective what he was about to do.
It was later on that night as he approached his old family home, one that he and his ancestors had owned sinced the time of the shogunate during the golden age of the samurai, his home was actually a large estate and to keep it his family needed to pay the government to keep the land itself.
There he was standing their with the family's ancestral katana in hand before his quivering and terrified wife, his face showed no emotion at all.
His wife screamed as he brought the blade down upon her as he began to cut her body apart, removing her limbs and disemboweling her letting her lay there in a pool of her own blood.
He heard a shout of fear and terror to turn to see his daughter who had just returned home from work to see him standing over the dismembered remains of his wife and her mothers body.
But he cared not as he swung at his daughter who blocked the blade with her forearm as the blade dug in and chipping away at the bone in her arm.
She screamed and cried out to her father to stop but it's as if she never said anything at all but he keeps going and cuts her arm off from midway up the forearm.
She grunts in pain as she begins to flee all while he slowly but menacingly follows behind her, his head twitches before an all encompassing evil toothy smile overcame his face for all but a moment, like a predator taking joy and excitement in the thrill of the hunt, soon enough his face returned to its normal state of blankness but that face of his shocked the real him to his core.
His daughter got around the wall but as these were walls from the old days, they were as thin as a few sheets of paper, seeing her stumble he cut through and slashed deeply through her other arm before kicking his way through the wall and cutting into her guts. She grunted out in pain before grabbing her by her long flowing hair and tossing her into a glass partition across from him, crashing and breaking it before falling down into the central courtyard below.
She was riddled in cuts as the glass embedded into her flesh as she was left bleeding and mangled across the ground with no strength to move all while he slowly walked down the stairs as they family's ancestral blade dripped blood with every step he took.
But as he prepared to go in for the final strike a dark fog began to fill the mansion and in particular the courtyard as it not only was it going around his feet but covered his dying daughter in the process but as he lifted his blade and plunged downwards and into her heart, she vanished into nothing at all.
Seeing this didn't faze him as he pulled the blade out of the ground while the sounds of anger and violence consumed him, the voices screamed out to him to begin to kill and slaughter all those around him.
And he stopped as if listening to the calming sound of the flowing leaves all around him.
And grinned….
"After that you would leave your home and begin to go on to commit one of the most heinous killing sprees in modern Japanese history before you are shot down by multiple JSDF soldiers sent to end your rein of terror here in Kanagawa, and you would die with a smile on your face as your family curse would end with your death and the Yamaoka family would cease to exist." The voice spoke out but he was hyperventilating all while he couldn't help but gag before throwing up onto the ground at the sight of everything he was about to do.
But he could still hear the voices, while hushed, demanded for bloodshed and slaughter, to cut away all that's holding him back and be free to do as he pleased while showing the people of Japan to fear the Yamaoka name once again.
"You are at a cross roads Mr.Yamaoka, are you going to allow the curse to consume you, destroy your family, become the monster your ancestor and the monstrous beast desires you to become? Or are you going to fight against fate and take up a different path in order to save you and your family's lives." The voice asked him again while he pulled himself up and wiped what was left of the puke from his lips before pulling himself up and down the alley towards his home.
He didn't know what to do as the confusion and conflict was flooding his mind, he didn't want to do it but he could feel the voices demand it as they scratched at his brain but his mind was also being soothed from the presence of the other.
But then he stopped an turned to see his face in a broken full body mirror next to a dumpster and what he saw wasn't him, but what he was about to become.
And what he saw…..
Was an Oni…