Felix is ​​the most dangerous demon and feared by all fairies, that's why he was captured and sent to a gray and lifeless place, to live alone forever, without a hint of mercy.  Felix spent every day of his life thinking about how to get out of that prison and take revenge on everyone who arrested him. until u showed up, you're the first person he's seen in thousands of years, he thinks you're scared to death of him, so he's going to scare you as much as he can to make you free him.