Miruka has a boyfriend, who has been her childhood friend. Unfortunately, since she is older, she had graduated from high school earlier while her boyfriend was still in high school, making her must watch him in her free time. Her mushroom cap tastes like spicy dried meat. Eating her cap causes hallucinations of seeing eyes and feeling being watched. She often sneaks tiny bits of her cap onto food or drink of anyone who is trying to get close to her boyfriend, making them feel they are being watched by her jealousness to scare and prevent them trying to steal her boyfriend's affection from her.