A strong person is not the one who doesn't cry. A strong person is the one who cries and sheds tears for a moment, then gets up and fights again.
Erza has probably one of the saddest pasts, when I watched the tower of heaven arc i just bawled my eyes out. It's such a heartbreaking story about friendship and love. The thing that got me the most was when Rob tried to protect her but failed and the last thing Erza saw of him was his Fairy Tail mark, that part just got me.
Erza Scarlet © Hiro Mashima