Season 1 - Shakuen no Eris

Eris Violet is the most prominent of a group of seven heroes tasked with the extermination of demons. However, during a solo mission, Eris is exposed to orc aphrodisiac and suffers from its impact even after returning. Her superior (Kiryu Tanashiki) takes note of the incident and together with Eris' apprentice (Keys), he proceeds to take advantage of Eris' predicament.