From the direction the manhwa has written the characters erez not being the ml will be immensely unsatisfactory Joseph is a good guy and a cute innocent lead but to be honest hes just not interesting enough theres not much depth to his character outside of hia devotion to keria and the development liie real relationship development has been between erez and keria his powers also arent very significant the story is going towards demons and maguc tower lore and unless he becomes a sword master(out classing keria the main character and taling away form the impact of her power in the manhwa) he has no chance going forward kerias powers and magic will play a large part i dont think he'll be able to impact the story enough to be male lead (︶︿︶) sorry Joseph fans