Urusei Yatsura Movie 3: Remember My Love

A curse placed on Lum at birth finally begins to move when a new amusement park opens in Tomobiki. During a magic show, Ataru is transformed into a huge pink hippopotamus, and the mysterious magician responsible vanishes before Lum can force him to undo it.

Lum's pursuit pulls her away from Ataru just as the curse begins rewriting their bond. Memories blur, feelings shift and even Lum's place in the lives of those around her starts to disappear. For once, Ataru must look past his endless flirting and decide whether the girl he takes for granted is someone he is truly willing to lose.