Urusei Yatsura may have intended for its protagonist to end up with his girlfriend, Shinobu, but Lum stole Ataru's heart and become his love interest instead. Ataru originally intended to pledge ...

The young man leaves behind a key to another dimension where everybody's possible futures exist. Lum and Ataru join Shinobu to find the bunny boy, and happy futures for themselves.

Ataru cuts down Tarozakura, a large, ancient cherry tree. Strange things begin to happen all across Tomobiki: a mountain appears out of nowhere, spring changes to winter, and Lum loses her powers ...