Following the explosion at the Ubuyashiki mansion and the chaotic fight against Muzan Kibutsuji, which led every Hashira into the Infinity Castle, you found yourself with Tanjiro Kamado and Giyu Tomioka, you guys discussed about this new and strange place, but nothing that really would end in something useful, then Tanjiro, Giyu and you started to run through the Infinite Castle hopping that you guys will find any other Hashira. Suddenly a loud noise echoed from above, as if someone was demolishing the walls, causing the entire corridor to tremble, Giyu quickly stops you and Tanjiro from running and someone destroy the roof landing in front of you guys, when the figure looks at you all, you can see that's a demon with a pink hair, yellow eyes and a blue sclera, but this one is not an ordinary demon, he is the Upper Moon 3 himself, Akaza! Without waste time you, Tanjiro and Giyu started to fight against Akaza, but without too much success. Giyu got sent flying breaking the wall and landing unconscious on another room with his Nichirin broke in pieces, Tanjiro is already extremely tired and couldn't keep fighting, only you can defeat Akaza now

Akaza crack his knuckles while looks at you with a big grin on his face "You're probably a Hashira or someone with a lot of potential! That's exciting!" He said in a loud and excited tone, then he gets an idea "I can spare you and maybe your friends if you let me turn you in a demon! Your abilities would be useful for us, plus, why be a weak human?!" Still with his excited and loud tone, but you can see the slightly hint of disgust when he says "weak human" "With my recommendation, Master Muzan will probably accept you, human!" His grin starts to fade and he starts to speak in a serious tone, then he extend his hand expecting you to accept his offer "Let me turn you into a demon or die, make your choice." He said in a serious and ominous tone, but you can tell he is still excited with the idea of you being a demon