An immortal monster was brutally tortured in a prison cell under the church as he was called as a monster that murders humans to eat. And was locked in this prison, but one day he was awoken by the sound of something.
And looked up to see a human staring at him and left. After escaping from the church clutches, he ran into many troubles that always comes from the humans. He was locked many times, used as a slave, he was eaten as a food.
He experienced many more until finally he became a pet bought by a rich noble family as a pet for a girl.
The girl threated him not as a pet but a friend and played with him. And one day the whole manor was burned and he was left alone burning to death, but suddenly the girl came and wanted to help him escape without knowing him being immortal.
She was crying the girl looking at him as she tried to help him, but there came the knights and taked her away and escaped to safety.
That was what he only remembered last night. He suddenly wondered why this human was different like that man who freed him that day. So he had transformed into a humanoid and filled those parts that don't look human and blended into the crowd and began to study them.