To end the curse that had plagued his family for millennia, he chose the darkest path.

As the 97th Master of the Demon Slayer Corps, Kagaya Ubuyashiki has always been a gentle and revered leader in the hearts of all his members. However, as the curse increasingly erodes his life, and as he foresees that his daughters will repeat the same mistakes, on the verge of despair, he makes a choice that will shake the world—to make a deal with Muzan Kibutsuji and become the most hidden Upper Moon Zero.

By day, he remains the lord who guides everyone in the fight against demons; by night, however, he is loyal to his millennia-old nemesis. When the truth is revealed on the eve of the final battle, the Demon Slayer Corps' faith crumbles overnight. The former "father" becomes the most despicable traitor, and the Pillars who once swore their undying loyalty turn their blades against each other.

But at the end of this sin-soaked road, does Kagaya hold a trump card that can turn the tide for a thousand years? When wisteria blossoms alongside bloodshed, this game of chess that began with betrayal will finally reach a shocking conclusion.

Sixteen-year-old Sheehan Asta, only the matter of "Climbing the Tower" remains in his life. "Whatever your wish is, as long as you climb to the top of the tower, you can fulfill it." Any wish can be fulfilled. This is indeed an irresistible temptation for ordinary people, enough to make them give up everything for it. But Sheehan Asta didn't climb the tower to fulfill his wish. Only she can fulfill her wish herself. So are you going to climb the tower? Even if it takes a gamble on your life." Of course. Because she had a reason to have to climb the tower. Allow me to take the liberty of asking, what is your wish? "

The protagonist traveled through the toilet on the spot. There was a loud bang (the protagonist's stomach flew), and then the toilet lid bounced off. When he woke up, he was already in the sprunki world. So what should the protagonist do? In the end, how to survive? Please see how to survive (sprunki: I rely on myself to travel through time). Because there are a lot of swear words, it will not pass the review. I need to make some adjustments first. Also, the author of this work will update twice a day without interruption. And I will do a challenge later to list all the viewers in the list at the end. Please stay tuned.

Fanfiction by sprunki.

Blood and death filled this land,

The dark clouds of war are floating in the sky over the city,

Gray, the devil incarnate, lingers in the shadow of the city.

He is weak, very weak...

Extraordinary, strange, divine,

The Golden Man, the Sinner, and the Corrupt Original Government,

"I offer you everything I have for your protection."

"allow."

Under the protection of the moody Blake and the mentally unstable Wenda, Gray is safe, temporarily.

"Give fear and death to everyone, and the Lord of Darkness will surely come to the world!" Blake said.

With death all around us, how long can even the calmest and most easy-going person remain normal? This world has gone mad long ago!

(Boring, the author wants to see rivers of blood!)

Villain story, dark story, contains bloody and violent plots, do not read if you don't like it, urban story, no CP tendency (maybe), friendship (?

Mainly the killing group Shashasha and the like.

(The author is a bit crazy, so it's normal for the characters to be crazy, right? The author is not a little devil.)