Bakunyuu Sennyuu Sousakan ~Honnou e no Nikuyoku Kyousoukyoku~

Japan in the near future
The idea of prosperous Japan became a myth, and people live in poverty.
People started to rumor about an underground kingdom where vicious crimes are organized exists somewhere in this country.
May from "Special fighting force Snake" started investigating on this.
However, one incident occurred and that was the beginning of her downfall...

[From DLsite English]