Why?

'I'm going to think about you every day,' says Sara. 'Me too,' Alex answers.

      Alex was a soldier. So he had to go to the fighting area and apart from Sara. She didn' t want him to go, didn't want to die. However, he went , leaving the promiss that he will sent e-mail for her.  At the battle field, he faced a lot of difficulty, and he was always thinking why people have guns, kill each other, die for young. Meanwhile, one unfortunete incident attacked him...