Read this on scribblehub, titled as Unfathomable Senior. The MC is none at all "unfathomable" and only relates to the title ever so often when the author decides to mention that the surrounding pedestrians are so shocked every 10 chapters. The main storyline doesn't actually begin until chapter 30-40 when he finally decides to leave the beginner village to look for his family. So if you don't like 30 chapters of filler and repetitive plot, don't read this.
