Review Detail of SonDio in Frieren: The Dark Mage's Diary

Good novel so far, but not for all readers. According to the guide chapter, the first 20 chapters are introductory, which means that for the following ones you will see a more adult version. The protagonist's reaction to the unknown, the dangers and how to take care of himself is the closest thing to realism. Good novel, as said, not for everyone.