Ninety Days of Koji
A Josei Manga

About this book:

Hana Tachibana traded spreadsheets for steaming rice vats the moment her father collapsed. Now she has ninety days—one brutal winter brewing season—to master the alchemy of koji, navigate the silent judgment of a sixty-eight-year-old master brewer who thinks women curse the yeast, and pull a three-hundred-barrel jizake operation back from the edge of bankruptcy. In the snow-locked valleys of Niigata, temperature is measured in tenths of a degree, time in forty-eight-hour fermentation cycles, and failure means losing the only life her family has known since 1892.

* Ninety Days of Koji* immerses you in the steam-heavy, muscle-aching reality of traditional sake craft: the pre-dawn wash of Gohyakumangoku rice, the nerve-jangling wait inside the cedar-walled *muro* as spores bloom, the blizzards that bury the access road and the bank letters that arrive with the morning post. It’s a josei manga that respects the science as much as the soul—where a fifteen-second soaking error turns premium ginjo into drain water, and a daughter’s corporate precision meets a father’s terrified pride.

No kimonos, no convenient romance, no shortcuts. Just the rhythm of the mash, the weight of legacy, and one woman discovering whether she can brew a future from the same cold water her great-grandfather drew. For readers who crave *Shirobako*’s workplace intensity crossed with *Silver Spoon*’s reverence for craft, this is fermentation as high-stakes drama—where every bubble in the tank whispers: *not yet, not yet, now.*