Review Detail of Ero_Mood in Mushoku Tensei Arthur

I feel sad for the author i don't know if he is naive or an idiot mc don't have brain and his personality is not stable he tries to act mature but he sound like an idiot then he decides he will act like a child but still fails to do so. This story concept is great but plots, dialogs and mc personality is shit. Mc likes roxy but willing to take bath with his brother and roxy and while he knows inside a kid there is a 40 year fat old pervert is there, i don't know what kind of fetish mc have.