i been looking for this manga for the past hour but all i can remember is a bit of the plot. So basically, the story takes place in a land where there are magic users and the strongest magic user died and to not make the people panic they found a person who resembles the strongest magician and made her pretend to be him. The manga also ends with that person who was originally pretending to be the strongest magician becoming elected to take the seat for real.

it's a bit awkward how i explained it but that's just how i remember it. It would be much appreciated to know the name of this manga. thank you.