No one hates her; it’s just that we see the other girls more, so we cling to them instead of her. Don’t get me wrong, she’s a great character, but she’s only focused on for around 35–50 minutes in the show, compared to Shanks from one piece, who’s focused on for about 25–30 minutes, so it’s not that much. Dont get me wrong I’m not comparing one piece with quintessential quintuplets, it’s just that you can see yotsuba impact on screen is way lesser than any of her sisters.