I read that quite a while ago. the mc is a girl who is tall and strong and begins to like her childhood and best friend who happens to like her too. at the beginning, he always treated her like a boy and became accustomed to it until he realized that she's a girl after all he can't stay the same way. The girl has brown reddish short hair. This manga has too much chapters but each one is a one page chapter. I don't know if anyone has read it before.

Tomo-chan wa Onna no ko! ??

Yes that's it, thanks a lot. (≧▽≦)