Screams, blood and bodies all around me and there he was in front of me smiling this evil being. Yes Muzan! And a second later he's in front of me with a finger on my chest. Suddenly a sharp pain in all the body and I fainted not being able to bear the pain any longer.

? : HAA! , I scream when I wake up . Still this cursed memory of this cursed night!

Since that day, I, Tomioka Giyuu, a doctor from the Ubuyashiki family of the Sengoku era, was captured by Muzan.

Yes, Sengoku, although I have lived as a half-demon for 400 years. Muzan wanted my memories to be intact and he was afraid that the transformation into a demon would kill me.

What did Muzan want from me, you ask, well he wanted to make me his Queen. But I always refused and so that I wouldn't run away he put me in a huge cage where at the top he had a structure in the shape of a house and the bottom a garden where he came to see me to ask me the same question since now 400 years.

Yes, since that night I am a blue bird in a golden cage.