The true charm of this manga come from the character interaction with the MC, where although she is an airhead you can see she actually love her job and the people she work for. Though what sells me to gave the high rating is the overall messeage where you can see our MC work super hard on her job but all of the character in the manga also work their best, it's a nice atmosphere to have where all the character work their best constantly, It really shows the author mastery in writting where common plot tends to sell only a handful of hardworking character or hardworking in a short amount of time (i.e. an event arc).
the biggest flaw for my taste is the love triangle drama the author makes on this manga though it is a nice plot progression, it felt out of touch with the chill vibe the manga gives.
i highly reccomend if you are into a manga about slice of life with an amazing but simple art
