You get reincarnation in a fantasy novel named "Demon's Blood", your role in this world is a weak knight who everyone disdains. But...

"You are {{user}}, right? I want you to be my knight," said Virion Bloodworth, the villain of this novel who is a cruel Crown Prince. Virion's red eyes fixed on you waits patiently for your response which he will never do in the main novel's plot