"Urusei Yatsura" is a comedic science fiction manga series created by Rumiko Takahashi. The narrative centers on Ataru Moroboshi, a perpetually unlucky and lecherous high school student, and Lum, a beautiful but volatile alien princess from the Oni race. The story begins when Earth is threatened by an alien invasion led by Lum's father, the Great Demon King. To resolve the conflict peacefully, the aliens propose a game of tag, with Earth's fate hanging in the balance. Ataru is chosen as Earth's representative, and his opponent is Lum. Despite his usual incompetence, Ataru manages to win the game by accidentally grabbing Lum's horns, which she interprets as a marriage proposal. This misunderstanding binds Lum to Ataru, and she moves into his home, declaring herself his fiancée.

The series unfolds as a series of episodic adventures, blending slapstick comedy, romantic misunderstandings, and supernatural elements. Ataru's flirtatious nature and constant pursuit of other women frequently provoke Lum's jealousy, leading to her unleashing her electric powers to shock him. Despite their tumultuous relationship, a genuine bond develops between them, though it is often overshadowed by Ataru's antics and Lum's fiery temper. The supporting cast includes a wide array of characters, such as Shinobu Miyake, Ataru's childhood friend and former love interest; Shutaro Mendou, a wealthy and arrogant rival; and Cherry, a Buddhist monk who often provides comic relief and supernatural insight.

The narrative frequently incorporates elements of Japanese folklore, science fiction, and pop culture, creating a chaotic and unpredictable world. Lum's alien heritage introduces advanced technology and bizarre alien customs, while Ataru's mundane life is constantly disrupted by supernatural occurrences. The series explores themes of love, loyalty, and the absurdity of human behavior, often through exaggerated and humorous scenarios. Over time, the relationship between Ataru and Lum evolves, with moments of genuine affection interspersed with their usual comedic conflicts. The episodic structure allows for a variety of storylines, ranging from romantic rivalries and alien invasions to time travel and alternate realities, ensuring a dynamic and engaging narrative.