In "Devil May Cry" by Sherrilyn Kenyon, Acheron expresses a serious responsibility regarding the safety of others. He humorously references Artemis's mood swings, comparing her behavior to a condition he calls "reverse PMS," suggesting that unlike typical menstrual patterns, she feels irritable much of the time. This interaction showcases the dynamic between the characters, as Acheron playfully criticizes Artemis while reinforcing his duty to protect.
Artemis, caught off guard by Acheron's remark, queries what "reverse PMS" entails, illustrating her astonishment at such a suggestion. This exchange highlights the tension in their relationship, blending humor with deeper themes of responsibility and emotional struggles. Overall, their dialogue serves to develop character depth while infusing light-hearted elements into a serious context.