"Chinpui" is a comedic anime series centered around the life of Eri Kasuga, an ordinary elementary school girl whose life takes an unexpected turn when she encounters a mischievous and supernatural creature named Chinpui. Chinpui is a small, bird-like being from another dimension who claims to be a "god of happiness." Despite his divine title, Chinpui often causes chaos and trouble for Eri, as his powers are unpredictable and his intentions are not always clear. The series explores the humorous and often absurd situations that arise from their unlikely partnership.

Eri, a kind-hearted and responsible girl, initially struggles to deal with Chinpui's antics, which frequently disrupt her daily life. However, over time, she develops a bond with him, often finding herself caught between frustration and affection for the quirky creature. Chinpui's presence also attracts the attention of other supernatural beings, including his rival, the grumpy and self-proclaimed "god of misfortune," Ropponmatsu. Ropponmatsu frequently schemes to outdo Chinpui, leading to a series of comedic confrontations and misunderstandings.

The narrative is episodic, with each episode presenting a new scenario where Chinpui's powers or Ropponmatsu's schemes create humorous dilemmas for Eri and those around her. Supporting characters include Eri's classmates, family members, and other supernatural entities, all of whom contribute to the series' lighthearted and whimsical tone. Despite the fantastical elements, the story often touches on themes of friendship, responsibility, and the challenges of growing up.

The dynamic between Eri and Chinpui forms the core of the series, with their interactions driving both the comedy and the occasional moments of heartfelt connection. While Chinpui's actions often lead to trouble, his presence ultimately brings a sense of adventure and unpredictability to Eri's otherwise ordinary life. The series balances its supernatural elements with relatable, everyday scenarios, creating a blend of humor and charm that appeals to a wide audience.