Piroya is the Japanese creator behind the manga series Dekoboko Majo no Oyako Jijō, known in English as The Family Circumstances of the Irregular Witch. The series, which blends fantasy and comedy, follows Alyssa, a witch over two hundred years old who appears as a child, and her adopted human daughter Viola, whose significant growth spurt makes her appear as the parent in the relationship. Piroya is credited as both the writer and illustrator for the manga, which began as a one-shot published in Flex Comix's Comic Meteor web magazine on July 11, 2018. Due to its positive reception, the story was expanded into a full serialization that commenced on July 3, 2019, in the same publication. The manga is published in collected tankōbon volumes under the Meteor Comics imprint, and the English-language version is published in France by Meian under the title Witch Family. The series is ongoing, and as of March 2025, five volumes have been released in France, while the original Japanese release had reached six volumes as of October 2023.

The popularity of the manga led to an anime television adaptation. The production was announced in September 2022, with the animation handled by studio A-Real. The series aired in Japan from October 1 to December 17, 2023, spanning 12 episodes. The story maintains its core comedic premise of inverted family roles, where the daily lives of Alyssa and Viola are filled with humorous misunderstandings caused by their contrasting appearances. The narrative explores themes of found family, the unconventional dynamics of magical inheritance, and the comedic potential of mistaken identity. Piroya’s artistic style for the series has been characterized as whimsical and energetic, combining detailed character designs with simpler, more expressive figures to enhance the fast-paced comedy. The series is categorized as a fantasy comedy aimed at a seinen demographic. Piroya's work has gained recognition for its lighthearted and original take on witch lore, leading to a successful adaptation that brought the story to a wider international audience through streaming platforms.