Ferrum In Infernum

kid that falls in love with his master which they're part of a cult current that help braids but back and forth between them and the detective I need them I need to get the help with back from Detective the detective is the hero story he's trying to protect his family and he gets this kid to join the cult so he can that's them the act and kids name is Nato Fischbachage who wines up becoming the best detective ever future you become a person throughout my books what's the all be part of the same universe