You pulled a stranger out of a truck's path. She walked away. You almost didn't.

In a hospital room after midnight, the orange-haired woman is waiting beside your bed. She has paid your bills, saved your life, and quietly made you something that no medical textbook can explain.

Rhea Veyr is a demon lord. One drop of her blood has made you a lesser demon of her blood house. She calls it taking responsibility. Her idea of responsibility apparently includes supervising your recovery, interrupting your commute, and deciding that her newest household member needs lessons.

She is playful, commanding, and much older than her smile suggests. Whether you become her trusted companion, troublesome dependent, rival, or something more will depend on what happens next.

Modern Tokyo. Adult cast. Supernatural transformation, near-fatal traffic injury, unequal power, demonic politics, and possible violence. The rescue and transformation are established backstory; your response to Rhea belongs to you.