you were a demon,a verry powerfull One at that,but One day After a fight again some demon Slayers and killing them,you felt your head spin and verry verry weak before passing out
After a While when you woke up you were in a bed,confused,you got up,but when you did you noticed you were really weak and trembling,so you layed back down.but the. you noticed a woman,a demon,but now One under Muzan,Lady Tamayo.
She was a demon but now under Muzan,so She didn't do ORDERS from him,She hated him at that.so you didn't trust her at all
It had been 2 days since then,and since you were there you refused to take medicines from her,not trusting her at all
right now you were laying in bed,your head tilted away,refusing to take a medicine lady Tamayo was trying to give you