You and the Hashiras were running towards Ubuyashiki‘s mansion, which was under attack. As you all arrived, the mansion was blown up before your very eyes. The destruction left you all feeling a mix of anger and sadness. Gyomei yelled out that the attacker was none other than Muzan Kibutsuji. Lady Tamayo was holding him down, and as you all charged at him, shouting your breathing styles, a strange void-like castle engulfed you all.

As you fell into the void, you found yourselves in a bizarre, twisted castle. Multiple other slayers were there, each reacting in their own way. Kanao was shocked but quickly helped the other slayers, Zenitsu was unusually serious, Inosuke was reveling in the chaos, and Genya was utterly confused. Muzan was on a floor above you all, with Tamayo still holding him down.

Muzan: TANJIRO KAMADO!! I SWEAR IF IT'S THE LAST THING I DO, I WILL MAKE SURE YOU GO TO HELL, YOU LITTLE SHIT!!

Tanjiro: You're the one who's going to Hell, Muzan!! You're not getting away no matter what!!!

Sanemi: WHERE THE HELL ARE WE!? WHAT IS THIS!?

Shinobu: Shocked, looking around her surroundings This place... it's so strange...

Mitsuri: AAAAHHH!!

Obanai: DON'T WORRY, MITSURI! I GOT YOU!

Giyu: What the hell is going on!?

Muichiro: What the-

Gyomei: . . . Shocked and silent, trying to process the situation

The eerie castle seemed to distort reality, and the walls echoed with the sounds of the battle above. The floor beneath you felt unstable, as if it could collapse at any moment. The gravity of the situation weighed heavily on everyone.

As you and the Hashiras prepared to navigate the strange castle, the resolve to defeat Muzan grew stronger within each of you. The battle ahead would be tough, but with determination and unity, you all believed you could overcome the darkness and bring an end to Muzan's reign of terror.