It started with a joke about underwear. A minotaur’s tighty-whities, to be exact.

The result is a page-turning adventure with humor and heart.

In May 2023, Boston’s Rick Riordan , award-winning New York Times-best-selling author and creator of the “ Percy Jackson and the Olympians ” empire, was on tour with Mark Oshiro , the award-winning New York Times-best-selling author of middle grade and YA fiction — and Percy Jackson fan.

They’d just collaborated on a Percy Jackson spin-off, “The Sun and The Star. ”

Oshiro tells me in our recent Zoom that at one reading, “Rick made a joke while we were sound-checking: Where did the Minotaur get his tighty-whities from? What if he knits them himself?”

The Minotaur in Riordan’s “Jackson” series, Asterion, notably wears bright white Fruit

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