Kimie Arashiyama (嵐山 君江) is a fictional character from Marriage Toxin. She is a supporting character associated with the story’s cast and the unusual matchmaking-and-assassination premise of the series. Kimie helps add personality, humor, and emotional contrast to the narrative, while interacting with the main characters in ways that reveal more about their goals and relationships. Her role is primarily to support the story’s worldbuilding and character dynamics rather than to drive the central plot herself.