Otoshimono

A young woman finds a mysterious object that grants her the ability to transform her appearance at will. Initially using it to fulfill her desires and explore new identities, she soon realizes that each transformation comes with a hidden cost. As she delves deeper into the object's power, she discovers that it feeds on her memories and emotions, slowly erasing who she truly is. Trapped in a cycle of change, she must confront the consequences of her choices before she loses herself completely.