In Shakuen no Eris Episode 1, viewers are introduced to Eris Violet, a distinguished member of a group of seven heroes dedicated to eradicating demons. During a solo mission, Eris falls victim to an orc aphrodisiac, leading to lingering effects even after her return. Her superior, Kiryuu Tanashiki, becomes aware of her condition and, along with her apprentice, Keith, exploits her vulnerability for their own gain.