Chaos;Head Di-Patch 2.5 by Nitroplus

Overview:
Takumi is a high school student. He is withdrawn and is not interested in 3D things.
In his town, a mysterious serial murder case happens and people get panicked.
One day, when he chats on the internet, a man suddenly contacts him and gives him a URL.
He goes to the website and finds a blog image that suggests a next murder case...
On the next day, it really happens...​