Synopsis

Rosalin tries to serve poisoned tea to the prince, but is stopped, revealing that the poison is imbued with demonic power, which prevents it from being neutralized by holy magic. Through her actions and the unique nature of the poison, it becomes clear that Rosalin is involved with the group that attacked them during the hunting competition. She's captured, interrogated, and it's revealed she works for the Black Moon organization who have created a poison specifically designed to be effective even against those with holy powers.