it's kinda noticeable the change when in the anime, we have a bit more scenes of Komichi interacting with more of her classmates, while the manga had to follow thorugh some arcs and some of the others didn't had so much time to shine until latter down in future arcs in the manga. (like the Hebibori one.)
AnimeOokuma MinoruUsagihara ToukoGirls with big ribbons and big foreheads are my type.Tanigawa KeiBut forehead characters shine the brightest when they lose their foreheads.MangaHad the biggest character design change in the anime from the manga.