Shadows Of The Abyss

I need a description? Ugh... Okay then... Hikaru is a boy at the age of eight, he was on his way home from school when he heard a metallic rattling noise, he shakes it off at first, but the noise continued. He got scared and ran home. He had a revolver and hid under his bed, he ended up shooting someone, but it wasn't what he though he shot. (I know I suck at descriptions...)