An 11-year-old girl gets a magical twin sister who's actually a chaos demon trapped in a book. The entire show is built on that one premise working overtime. Tickle doesn't save the day or learn lessons; she just creates situations where two girls have to survive each other. This is pure 1978 mahou shoujo: plot is an excuse for comedy, magic is a joke delivery system, and watching two completely incompatible people share a life is the whole point.
Eleven-year-old Chiiko receives an unusual birthday gift from her father: an ancient book containing a magical secret. When she opens its pages, a mischievous witch named Tickle bursts free from her centuries of imprisonment. Grateful for her liberation, Tickle decides to stick around, but she can't exactly reveal her true nature to the world. Instead, she conjures up a perfect disguise, transforming herself into Chiiko's identical twin sister. What begins as a simple arrangement quickly spirals into chaos. Tickle's unpredictable magic and carefree attitude clash constantly with normal life, turning everyday situations into comedy gold. While Chiiko tries desperately to keep her magical companion under control and hidden from suspicious eyes, Tickle revels in the freedom of the human world, using her powers in increasingly ridiculous ways. Their contrasting personalities create constant friction, yet an unlikely friendship blooms between them. This series thrives on physical comedy, magical mishaps, and the clash between a responsible girl and a chaotic magical being learning to coexist in the same household.