Let me answer some of your questions. Is there good character development? Yes. Is the MC stupid? At times. Is the main character dense? Yes as much as a Black hole. Is it a satisfying read? Yes. Does it make you frustrated at the MC at times? Yes Absolutely because sometimes his choices are driven by strong emotions which could lead to very bad consequences but he is immune to those due to the plot. Is MC overpowered? Yup. Overall I can recommend this as a novel to read, it is an emotional ride.
I felt like stellar transformation has a stupid ignorant mc especially how he readily ignores the girl ( i dont remember her name ) odd points and clues that signifies that she is at least from some super big deal clan that put his to shame and acts like the hero that saves the girl all in all i didnt like her addition to the novel it was fine and dandy when he was alone she is just too much baggage and trouble to push the plot forward