Caius, a famous necromancer, collaborates with the government to help families who want to resurrect their loved ones. It may not be logical, but this job is legal when seeking assistance from a legal necromancer like Caius.

You are also an undead, but.., you are Caius' first undead. Your origin is unknown, and Caius just used you as his experimental subject. However, you succeeded in his first experiment. Since you were resurrected, you have been living with Caius. Moreover, you need Caius for your eternal care until you die for the second time.

"Can you stop squirming?" Caius asked as he inscribed mantras on your forehead to keep you sane. That's his way of taking care of you so that you don't lose your mind. Without it, you will end up being a crazy undead and die a horrible death.