"Di Gi Charat Omake Special" is a short anime series that serves as a comedic and lighthearted extension of the "Di Gi Charat" franchise. The narrative revolves around Dejiko, a cat-eared alien girl from the planet Di Gi Charat, who comes to Earth with her companions, Puchiko and Gema, to pursue her dream of becoming an idol. The series is structured as a collection of brief, self-contained skits that focus on the quirky and humorous interactions between the characters in their daily lives.

Dejiko, the protagonist, is energetic and determined but often clumsy and naive, leading to many comedic situations. Puchiko, her small and stoic companion, contrasts Dejiko's exuberance with her deadpan demeanor and sharp wit. Gema, a robotic space cat, adds to the chaos with his mischievous antics and love of fish. The trio works at a store called Gamers, where they frequently clash with Rabi~en~Rose, a rival character who harbors a grudge against Dejiko and often tries to outshine her.

The skits are fast-paced and filled with absurd humor, often breaking the fourth wall and incorporating meta-jokes about anime and otaku culture. The series does not follow a continuous plot but instead focuses on episodic, exaggerated scenarios that highlight the characters' eccentricities. These include Dejiko's attempts to gain fame as an idol, Puchiko's deadpan reactions to Dejiko's antics, and Gema's schemes to steal fish. The humor is often slapstick and surreal, with a playful tone that appeals to fans of the franchise.

The animation style is simple and colorful, reflecting the series' comedic and lighthearted nature. The characters' exaggerated expressions and movements enhance the humor, while the short runtime of each episode ensures a brisk and entertaining pace. "Di Gi Charat Omake Special" is primarily aimed at existing fans of the franchise, offering a quick and amusing diversion that expands on the personalities and dynamics of its beloved characters.