自由気ままな精霊姫

Olivia, the young lady of the Cypherd family, suffers cruel bullying from her stepmother and stepsister, unable to resist due to a mysterious condition where her heart and body are disconnected, leaving her in a constant state of emptiness. She clings to memories of her late mother and Sirius, a kind older brother figure from her childhood, as she endures isolation in the attic. Her stepsister, Anna, makes a drastic decision that pushes Olivia’s life toward a turning point. Rescued by Sirius, now a powerful heir of a northern conglomerate, Olivia begins to reclaim her strength with his unwavering support. Awakening to her hidden spirit powers, she starts to navigate a path of self-discovery and retribution in a fantastical world. (Unreviewed summary by Grok 3)