When he woke up, Linnai transformed into the cannon fodder villain in a certain novel - a weak chicken with a miserable ending and a pure stepping stone life. System? No! Goldfinger? Doesn't exist! Just when he was desperate, a certain unnameable evil god "happened" to come over and said, "Do you want to live? I will help you change your destiny against the will of heaven, and you will help me... Eat other... Things."
Linnai: "... Can I refuse? Aren't you making me die faster?"
Evil God: "Okay. But do you think you have a choice?"
Linnaeus: "... Deal."
Therefore, the weak villain is forced to embark on the path pointed by the evil god in order to change the fate of the plot.