Rin, a cursed ichimatsu doll, only wanted to spend her days quietly.
The one she met after being taken in was a woman who had been cursed.
The days spent with her were, for Rin, calm and comforting—something she had not felt in a long time.

A favor for a favor. A curse for a curse.

For the sake of her own peace, and to preserve the quiet around her—
Rin quietly wields her power.