@Kaarme This person is up and down through this manga's comments whining about how any attention paid to Akane or other light-haired characters means that black-haired people don't get to be special. They seem to think it's some kind of racism.
(Main characters in manga and anime do often have bright hair colors to stand out from the crowd; this is purely a visual convention for storytelling purposes, and doesn't even always mean their hair is really that color. In contrast, long, shiny, black hair is considered a beauty ideal in Japan, and a female character having it is often meant to mean that she's "classically" beautiful.)
I'd argue that if there's a second protagonist in this manga that takes focus from Makoto, it's Chinatsu; of course, I'd never complain about that, because Chinatsu is great.