Urusei Yatsura: Only You

Lum becomes enraged when everyone in Tomobiki receives an invitation to Ataru's wedding, with her not being named as the bride. Eleven years earlier, Ataru played "Shadow Tag" with a girl named Elle and won. Unbeknownst to him, Elle was an alien princess from a planet where a boy stepping on a girl's shadow necessitates marriage. Elle's emissary arrives to finalize the union, and Lum attempts to stop it with her electric attacks, but a force field now shields Ataru. Lum's friend Benten proposes a preemptive wedding, leading to the abduction of Ataru and all the wedding guests, setting the stage for a chaotic and rushed marriage.