So, Sebastian didn't took the real Ceil as the sacrifice. I suppose that's what Ceil meant when he asked about Sebastian lying to him.
Undertaker definitely has some relation with this turn of events.
That's why Sebastian couldn't sense the presence of real Ceil because he didnt had any soul within. I suppose....
So, Sebastian didn't took the real Ceil as the sacrifice. I suppose that's what Ceil meant when he asked about Sebastian lying to him.