The story centers around Hinami, a bookish, eyeglasses-wearing girl, and her two friends. When there is a mystery to solve, she transforms into the clever Nazotoki-hime (literally, Princess Mystery Time). 
 
(Source: Anime News Network) 
 
Note: The episodes were included in "Ciao Ciao TV! (ちゃおちゃおTV!)", a bonus DVD bundled in select issues of the shoujo magazine Ciao.

The story centers around Hinami, a bookish, eyeglasses-wearing girl, and her two friends. When there is a mystery to solve, she transforms into the clever Nazotoki-hime (literally, Princess Mystery Time).
 
(Source: Anime News Network)

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