He woke up (isekaied) on a bed in ragged clothes when someone ran up to him, then he witnessed a witch got public execution with holy magic. That night he heard crying next to his room (where the witch once lived), called the church, assigned the task to investigate the sound with some guards, they fought some rats and MC unlocked the magic books within his head. (He has an entire library in his head). But he don’t know how to read so he has to work to make ends meet and pay for education. I think his isekaied name must have a “Lu” at front, not sure if it’s Lucie.