Suit Yourself or Shoot Yourself: The Nouveau Riche

The main protagonists Yuji and Kosaku end up in a car crash with a woman, called Minako, who is shell shocked after stumbling into the aftermath of a gangster shoot-out and was given a stash of heroin by one of the blood-drenched participants. When the crime underworld comes for the stash however the quantity of drugs grows in size and the desire of the gangsters to acquire it grows as much. (Summary by Coheed)