Corpse Party: Torment

It's only been a day since I wound up in this god forsaken place and already I can feel my body beginning to wither and die.
I need water but from what others have told me, it's not safe to drink the water in this place; it just leads to a faster approaching death.
I don't want to die, not here, not whilst I'm young, but I'm not even sure how I got here or what fate has in store for me- I just hope that if I am to die, it'll be sudden and consist of hardly any pain, if any at all.

I came here with my Brother and 3 of our friends, I haven't managed to find any of them yet and it's beginning to worry me a hell of a lot.
The thought of where we are now is horrifying, I mean the place we are in now doesn't exist anymore, it's just impossible that we could be here.
People kept asking me where they had wound up and until recently I couldn't answer them but now, after only a day, I now know where I am and why I'm here.
I am in Heavenly Host Elementary School.
The school in which three bloodied murders took place- these murders resulted in the demolition of the school and the head masters suicide; the school was like his child and when he realized he was going to lose it, he felt like he had no choice.
To this day, many people think that the head masters son committed the murders, except this is untrue.
It was a girl.
A little girl, in a red dress, with long, black hair.
Her name: Sachiko Shinozaki.

You may be wondering, how does a child commit three murders; especially murders carried out with such brutality.
The question isn't how, but why? It's clear that anyone could do such a thing but it's usually down to a motive.
Unfortunately I still don't know this, all I know is that she was the murderer and she's dead.
I'm unsure of how she died; people I've seen down here have told me that they have seen the ghosts of the murdered children- they won't describe them to me though, they seem too afraid and disgusted by the images of them.

From newspaper articles, each victim was killed differently, yet each had their tongues severed with a pair of scissors… they must have been sharp to have cut through flesh with that thickness… but that's beside the point, there were two girls and a boy involved in the murders: the boy's body was mutilated, his insides forcefully pulled out of his stomach; the first girl had the top of her head manually severed from her body (the lower jaw still on show with the bottom row of teeth still protruding from the jawline); and the final girl, said to be the eldest of the three, died a slow painful death- presumably from loss of blood after having her eyeball forcefully ripped from it's socket.