Why me? *a haikyu fanfic*

Hinata Shouyou is a 16 year old high schooler with an 8 year old sister, Hinata Natsu. It's been two years since their parents' death and it's time for Hinata to start his first year of high school. He is secretly thinking of ending his life but he tries to hide it in order to not make Natsu worry.
Will he commit suicide or will he let his secret out?
Will he find someone to help him get better?
What will happen to Natsu while her brother's at school?

I don't own haikyu or any pictures I only own the story plot.