"Asobi ni Iku yo!" is a science fiction manga series written and illustrated by Tamiki Wakaki. The story centers around Kio Kakazu, a high school student living in Okinawa, who encounters a mysterious girl named Eris, who claims to be an alien sent to Earth on a mission. Eris, accompanied by her robotic cat companion, Manami, reveals that she is part of a cat-like alien species known as the Catians. Her mission is to establish peaceful relations with humanity, but her approach is unconventional, often leading to humorous and chaotic situations.

As Kio becomes entangled in Eris's mission, he learns that her presence on Earth has attracted the attention of various factions, including government agencies and rival alien species. The narrative explores themes of interspecies communication, cultural exchange, and the challenges of coexistence. Eris's naivety and curiosity about human culture frequently clash with the more pragmatic and cautious attitudes of those around her, creating a dynamic interplay between comedy and tension.

The series introduces a diverse cast of characters, including Aoi Futaba, Kio's childhood friend, who harbors feelings for him and becomes increasingly involved in the unfolding events. Other key figures include Eris's fellow Catians, who have their own agendas, and human operatives tasked with monitoring and managing the alien presence on Earth. The interactions between these characters drive the plot forward, blending elements of romance, action, and science fiction.

Throughout the story, the manga delves into the complexities of Eris's mission, her evolving understanding of human emotions, and the broader implications of her species' intentions. The narrative balances lighthearted moments with deeper explorations of trust, identity, and the potential for mutual understanding between vastly different civilizations. The series maintains a steady pace, alternating between episodic adventures and overarching plot developments, ensuring a mix of humor, intrigue, and character growth.