The world is filled with poison.

It is invisible to the naked eye.
Nor it can be produced chemically.
The spread of the world poison that cannot be defended, neutralized, nor be recognized.
It is a reality that nobody even can comprehend.
　
The route of infection comes from the soil, the waters, everything in the natural world contains this toxic properties,
Every single human being has been infected without realizing it.
　
This coercive poison afflicts neither the respiratory nor the digestive organs.
It afflicts desire, love and hate, hostility, and the organ that governs loneliness--- the human heart.

The world poison is invisible to the naked eye.
Nor it can be sublimated through philosophy.

With the exception of Suzuura Tsukasa and Futami Kanako, who are isolated in Ikebukuro...