Why?

'Please don't go to Glossia,' says Sara. 'You're only nineteen.' (p. 5)

 The main character of this story is Alex, an a soldier. He works in the army to stop the fighting which kills people. This story was little scary for me, but in the last it made me happy.
 If you are interested in, please check it out!

Prowse, P. (2008). Why? Cambridge English Readers; UK.