The so-called perfect butler should be like the butler of the Stella family.
He became the young master's butler from the age of 18 until he was old.
He has always been the Sturt family's dog, the most loyal, the most loved by the young master, and the one who understands the young master best.
He remained unmarried until the young master died, but he was reborn after death and had the body of a demon.
The young master is not a young master.
He could feel that this was indeed the young master's body, but the person inside had changed.
No matter what, he is just the most loyal dog in the Stella family.
[The story of a loyal butler who is reborn and is dragged around by a young master who has changed his soul to travel to parallel worlds, and secretly collects the real young master's soul.