Lifeline

Gray Fullbuster at your service and her... she's Erza Scarlet, the girl who just transferred from who knows what school. Annoying, vexatious, goody two shoes, that's what I initially thought of her but now I can't even bother to think of it now.
All I could remember was the day my mom had asked me to babysit miss damn perfect and I can't even imagine how we got here. It all started when she got here, that's right, it all started then... when I was forced to look after her.
I can't imagine how such a burden would be this important to me. Important enough to paralyze me to fear, important enough to make me move before I think, important enough for me to risk my life, important enough for me to call my Lifeline.