Corrupted Blossoms Academy #1
The Oni's First Bride

Tenka Academy: a haven for the country’s finest young women, where tradition meets excellence. But beneath the cherry blossoms and pristine walls lies a secret—an ancient battle waged in the shadows by the Yōkai Suppression Club.

First-year student Hinami Aozora, brimming with confidence, is on the trail of an elusive Oni. But her overconfidence may lead to her—and the Academy’s—downfall...

https://www.pixiv.net/en/artworks/124699385