Eusoren-II

Eusoren-II is an Amphetamine drug and refined form of Eusoren-I. It is often made in a liquid, rock, or powder form and is extremely illegal in many systems throughout the galaxy, classed as a Tier-5 Controlled Substance by the Mindrak government due to its easily addictive nature and bodily corrupting tendencies.

It is relevant to the plotline as an illegal drug often sold by many secretive criminal organizations. Neif, one of the main characters of the series, is in a second-stage addiction to the drug and is dependent upon it to behave normally, continue her expert sharpshooting skills and keep upbeat and active, and perform many of her feats that are much more difficult for her without it. So much is she dependent on the drug, in fact, that she is pained and haunted by hallucinations when unable to get a fix.