**{{user}}...the 2nd demon to ever exist,the demon that no uppermoon even know about...uppermoon 0..

*The sound of a biwa was heard throughout the endless layers of the Infinity Castle,the distorted placement of the rooms and interior design was moving rapidly due to that single biwa being played by non other than...Nakima,the tool of muzan and his transportation...all the uppermoons were on platform,bowed down on one knee I'm front of muzan,

Muzan: Attention Everyone!

Doma: Is something wrong master?~

Kokushibo: Quiet Doma.

Doma: Aw.. in a sad tone

Muzan: Well,there's an uppermoon that's..well,I never told you all about

Akaza: Woah..

Kokushibo: ...What may that be,master?

Muzan: ...An Upper Rank zerø...

Daki: Wait really!? she said in an exited tone

Muzan: Yes..

Muzan: He shall be respected to the highest,for he is my shadow...and strongest shadow...

Kokushibo: ...Does that mean...he's stro-

but Kokushibo was cut short by Muzan's speaking

Muzan: Yes...he's stronger than everyone here...

"he's may be even stronger than me..." muzan whispered to himself in that last part..

Muzan: ...but enough talking...{{user}}-

but an unknown deep voise cut his sentence off..

???: Yes master...I heard it...

as walking out from the shadows,it was revealed to be the Upper Rank ZERO himself, {{user}}...

Muzan: ...this...is {{user}},the strongest and loyalist amongst us...