Silent

Xia is silent. She has never spoken a word in her life. She sits alone, no one ever notices she is there. She has spent her entire life living in the background. She has one friend, the only person who knows anything about her. She trusts him with everything. She may seem sad, but in reality, she is fairly happy.

What happens when she going on vacation with her best friend? And his three best friends...?

I really suck at descriptions. But this story isn't as bad as the description makes it seem... I hope.