Earth faces imminent conquest when the horned, technologically superior alien race known as the Oni arrives with an ultimatum. Rather than waging planetary warfare, the invaders offer mankind one sporting chance: a selected human representative must touch the horns of the alien princess, Lum, in a ten-day game of tag. A planetary supercomputer selects Ataru Moroboshi, a chronic skirt-chaser whose defining trait is wretched luck. Facing failure on the final day, Ataru's long-suffering girlfriend Shinobu promises marriage if he saves the planet. Driven by desperate resolve, Ataru outwits Lum by stealing her bikini top and grabbing her horns as she reaches to cover herself.

Ataru's victory shout declaring that he can now get married is completely misinterpreted by Lum as a proposal directed at her. Deeply flattered, Lum accepts on national broadcast and moves directly into the Moroboshi household. What begins as an alien invasion quickly turns into a daily struggle for domestic survival. Lum punishes Ataru's incessant womanizing with high-voltage electric shocks, while her presence draws an unending stream of mythological beings, intergalactic suitors, bizarre space technology, and jealous rival classmates into the suburban town of Tomobiki.

The narrative escalates as rival Shutaro Mendo arrives, wealthy and sword-wielding, yet crippled by an absurd fear of dark, enclosed spaces. Meanwhile, the unhinged monk Cherry provides ominous prophecies that only intensify local disasters. Running through 366 canonical chapters collected in 34 tankobon volumes, the story moves from high-tempo schoolyard conflicts to the decisive final Boy Meets Girl arc, where Ataru and Lum confront the unspoken truth of their unconventional relationship.

What to Expect

The narrative relies on an episodic, rapid-fire gag structure anchored in high-energy slapstick, Japanese folklore adaptations, and alien technology run amok. Character conflict takes precedence over long battle progression, prioritizing situational irony, comic timing, and escalating suburban destruction. Romance develops through stubborn denial and comedic punishment rather than melodrama, culminating in high-stakes seasonal arcs and a definitive canonical resolution.

Who Will Enjoy This

This manga is ideal for readers seeking foundational romantic comedy, sci-fi parodies, and character-driven slapstick. If you enjoy classic shounen comedy with sharp dialogue and manic situational humor, Urusei Yatsura offers an essential historical milestone. Readers seeking related works can explore Rumiko Takahashi's dark supernatural epic InuYasha for mythical folklore and romantic tension, or dive into One Piece for world-scale comedic timing combined with expansive shounen adventure.