The Apothecary Diaries: Volume 12 (Light Novel) by Natsu Hyuuga

The tumultuous political events of recent days have left I-sei Province looking for leadership, but there are obstacles everywhere they turn. Gyokuen’s sons refuse to rule, while Gyoku-ou’s oldest child is unpredictable and violent. Jinshi decides to tutor Gyoku-ou’s other sons in the ways of politics, but they’re going to discover that it’s an even more dangerous business than they ever anticipated. Maomao, as ever, just wants to live her life, but she might not be able to ignore the escalating perils around her. In fact, they might not ignore her...