The plot is very cliche and bloody. Someone just likes to spread a lot of blood. As for whether it will shock you, well... It depends on the writing style of that person, although... That person feels that he is a waste.
This is the story of a low-level snake demon with no conscience who wants to become a strong man.
Unexpectedly, he encountered a powerful attacker who had lost his memory and recognized the wrong person. The snake demon used a trick to deceive him and let him become his bodyguard.
Then the two of them fight monsters and take risks.
Slowly, the snake demon became more interested in fighting.
Of course, he knew it couldn't work. He was not his true self. Even if Gong ignored everything and only cared about the snake demon, it would be an illusion.
Then...
Then came the bloody plot...
As for what kind of nonsense it is, can you guess it? Guessed it? You must have guessed it, right?
Then someone won't spoil it.