The Apothecary Diaries: Volume 13 (Light Novel) — Natsu Hyuuga

Maomao, Jinshi, and the others finally return to the royal capital to discover that life went on while they were away: Lahan is still working his abacus, Maamei is still pondering the future of both the Ma clan and her little brother Basen, and Yao and En'en are still pursuing their dreams (to become a doctor and to geek out over Yao, respectively). Maomao might have hoped that things would quiet down now that she no longer has to deal with locust swarms and succession crises, but it turns out things are livelier than ever as she reconnects with people and places she hasn't seen in almost a year. Meanwhile, the seeds of a new mystery are being planted...